Example #1
0
File: simulate.C Project: 8l/rose
int main(int argc, char *argv[]) {
    Diagnostics::initialize();
    ::mlog = Diagnostics::Facility("tool", Diagnostics::destination);
    Diagnostics::mfacilities.insertAndAdjust(::mlog);

    // Parse the command-line
    Partitioner2::Engine engine;
    std::vector<std::string> specimenNames = parseCommandLine(argc, argv, engine);
    if (specimenNames.empty())
        throw std::runtime_error("no specimen specified; see --help");

    // Load specimen into memory
    MemoryMap map = engine.loadSpecimens(specimenNames);

    // Configure instruction semantics
    Partitioner2::Partitioner partitioner = engine.createPartitioner();
    Disassembler *disassembler = engine.obtainDisassembler();
    const RegisterDictionary *regdict = disassembler->get_registers();
    if (disassembler->dispatcher() == NULL)
        throw std::runtime_error("no instruction semantics for this architecture");    
    BaseSemantics::RiscOperatorsPtr ops = InstructionSemantics2::ConcreteSemantics::RiscOperators::instance(regdict);
    BaseSemantics::DispatcherPtr cpu = disassembler->dispatcher()->create(ops);
    ConcreteSemantics::MemoryState::promote(ops->currentState()->memoryState())->memoryMap(map);

    // Find starting address
    rose_addr_t va = 0;
    if (settings.startVa) {
        va = *settings.startVa;
    } else if (engine.isaName() == "coldfire") {
        // Use the interrupt vector to initialize the stack pointer and instruction pointer.
        uint32_t sp, ip;
        if (4 != map.at(0).limit(4).read((uint8_t*)&sp).size())
            throw std::runtime_error("cannot read stack pointer at address 0x00000000");
        ops->writeRegister(disassembler->stackPointerRegister(), ops->number_(32, ByteOrder::be_to_host(sp)));
        if (4 != map.at(4).limit(4).read((uint8_t*)&ip).size())
            throw std::runtime_error("cannot read instruction pointer at address 0x00000004");
        va = ByteOrder::be_to_host(ip);
    } else if (!map.atOrAfter(0).require(MemoryMap::EXECUTABLE).next().assignTo(va)) {
        throw std::runtime_error("no starting address specified and none marked executable");
    }
    ops->writeRegister(disassembler->instructionPointerRegister(), ops->number_(32, va));

    // Execute
    map.dump(::mlog[INFO]);
    while (1) {
        va = ops->readRegister(disassembler->instructionPointerRegister())->get_number();
        SgAsmInstruction *insn = partitioner.instructionProvider()[va];
        SAWYER_MESG(::mlog[TRACE]) <<unparseInstructionWithAddress(insn, NULL, regdict) <<"\n";
        try {
            cpu->processInstruction(insn);
        } catch (const BaseSemantics::Exception &e) {
            ::mlog[WARN] <<e <<"\n";
        }
    }

    // std::cout <<"Final state:\n";
    // std::cout <<*ops->currentState();
}
BinaryAnalysis::Disassembler::AddressSet
SgAsmX86Instruction::getSuccessors(const std::vector<SgAsmInstruction*>& insns, bool *complete,
                                   const MemoryMap::Ptr &initial_memory)
{
    Stream debug(mlog[DEBUG]);
    using namespace Rose::BinaryAnalysis::InstructionSemantics2;

    if (debug) {
        debug <<"SgAsmX86Instruction::getSuccessors(" <<StringUtility::addrToString(insns.front()->get_address())
              <<" for " <<insns.size() <<" instruction" <<(1==insns.size()?"":"s") <<"):" <<"\n";
    }

    BinaryAnalysis::Disassembler::AddressSet successors = SgAsmInstruction::getSuccessors(insns, complete);

    /* If we couldn't determine all the successors, or a cursory analysis couldn't narrow it down to a single successor then
     * we'll do a more thorough analysis now. In the case where the cursory analysis returned a complete set containing two
     * successors, a thorough analysis might be able to narrow it down to a single successor. We should not make special
     * assumptions about CALL and FARCALL instructions -- their only successor is the specified address operand. */
    if (!*complete || successors.size()>1) {
        const RegisterDictionary *regdict;
        if (SgAsmInterpretation *interp = SageInterface::getEnclosingNode<SgAsmInterpretation>(this)) {
            regdict = RegisterDictionary::dictionary_for_isa(interp);
        } else {
            switch (get_baseSize()) {
                case x86_insnsize_16:
                    regdict = RegisterDictionary::dictionary_i286();
                    break;
                case x86_insnsize_32:
                    regdict = RegisterDictionary::dictionary_pentium4();
                    break;
                case x86_insnsize_64:
                    regdict = RegisterDictionary::dictionary_amd64();
                    break;
                default:
                    ASSERT_not_reachable("invalid x86 instruction size");
            }
        }
        const RegisterDescriptor IP = regdict->findLargestRegister(x86_regclass_ip, 0);
        PartialSymbolicSemantics::RiscOperatorsPtr ops = PartialSymbolicSemantics::RiscOperators::instance(regdict);
        ops->set_memory_map(initial_memory);
        BaseSemantics::DispatcherPtr cpu = DispatcherX86::instance(ops, IP.get_nbits(), regdict);

        try {
            BOOST_FOREACH (SgAsmInstruction *insn, insns) {
                cpu->processInstruction(insn);
                SAWYER_MESG(debug) <<"  state after " <<insn->toString() <<"\n" <<*ops;
            }
            BaseSemantics::SValuePtr ip = ops->readRegister(IP);
            if (ip->is_number()) {
                successors.clear();
                successors.insert(ip->get_number());
                *complete = true;
            }
        } catch(const BaseSemantics::Exception &e) {
Example #3
0
bool SymbolicExpansion::expandAarch64(SgAsmInstruction *rose_insn, BaseSemantics::RiscOperatorsPtr ops, const std::string &insn_dump) {
    SgAsmArmv8Instruction *insn = static_cast<SgAsmArmv8Instruction *>(rose_insn);

    BaseSemantics::DispatcherPtr cpu = DispatcherARM64::instance(ops, 64);

    try {
        cpu->processInstruction(insn);
    } catch (rose::BinaryAnalysis::InstructionSemantics2::BaseSemantics::Exception &e) {
        // fprintf(stderr, "Instruction processing threw exception for instruction: %s\n", insn_dump.c_str());
    }

    return false;
}
// The actual analysis for a function call starting at a function call return point and terminating each path whenever we reach
// another function call.  Try to figure out if we ever read from EAX without first writing to it and return true if we do.
static bool returnValueUsed(const Cfg &cfg, CfgVertex startVertex, const RegisterDictionary *regdict) {
    BaseSemantics::SValuePtr protoval = NullSemantics::SValue::instance();
    RegisterStatePtr registers = RegisterState::instance(protoval, regdict);
    BaseSemantics::MemoryStatePtr memory = BaseSemantics::MemoryCellList::instance(protoval, protoval);
    BaseSemantics::StatePtr state = BaseSemantics::State::instance(registers, memory);
    BaseSemantics::RiscOperatorsPtr ops = NullSemantics::RiscOperators::instance(state);
    size_t addrWidth = regdict->findLargestRegister(x86_regclass_gpr, x86_gpr_sp).get_nbits();
    BaseSemantics::DispatcherPtr dispatcher = DispatcherX86::instance(ops, addrWidth);

    WorkList<CfgVertex> worklist(true);
    Map<CfgVertex, size_t> seen;
    worklist.push(startVertex);
    while (!worklist.empty()) {
        CfgVertex v = worklist.pop();
        seen[v] = 1;
        SgAsmBlock *bb = get_ast_node(cfg, v);
        std::vector<SgAsmInstruction*> insns = SageInterface::querySubTree<SgAsmInstruction>(bb);

        // "Run" the basic block
        bool failed = false;
        BOOST_FOREACH (SgAsmInstruction *insn, insns) {
            try {
                dispatcher->processInstruction(insn);
                if (registers->readUninitialized())
                    return true;
            } catch (...) {
                failed = true;
                break;
            }
        }
        if (failed)
            continue;

        // Add new vertices to the work list, but only if none of the outgoing edges are function calls.
        bool isCall = false;
        CfgOutEdgeIterator ei, ei_end;
        for (boost::tie(ei, ei_end)=out_edges(v, cfg); ei!=ei_end && !isCall; ++ei)
            isCall = isFunctionCall(cfg, *ei);
        if (!isCall) {
            for (boost::tie(ei, ei_end)=out_edges(v, cfg); ei!=ei_end && !isCall; ++ei) {
                if (!seen.exists(v))
                    worklist.push(v);
            }
        }
    }
    return false;
}
std::string
NoOperation::StateNormalizer::toString(const BaseSemantics::DispatcherPtr &cpu, const BaseSemantics::StatePtr &state_) {
    BaseSemantics::StatePtr state = state_;
    BaseSemantics::RiscOperatorsPtr ops = cpu->get_operators();
    if (!state)
        return "";
    bool isCloned = false;                              // do we have our own copy of the state?

    // If possible and appropriate, remove the instruction pointer register
    const RegisterDescriptor regIp = cpu->instructionPointerRegister();
    BaseSemantics::RegisterStateGenericPtr rstate = BaseSemantics::RegisterStateGeneric::promote(state->registerState());
    if (rstate && rstate->is_partly_stored(regIp)) {
        BaseSemantics::SValuePtr ip = ops->readRegister(cpu->instructionPointerRegister());
        if (ip->is_number()) {
            state = state->clone();
            isCloned = true;
            rstate = BaseSemantics::RegisterStateGeneric::promote(state->registerState());
            rstate->erase_register(regIp, ops.get());
        }
    }

    // Get the memory state, cloning the state if not done so above.
    BaseSemantics::MemoryCellStatePtr mem =
        boost::dynamic_pointer_cast<BaseSemantics::MemoryCellState>(state->memoryState());
    if (mem && !isCloned) {
        state = state->clone();
        isCloned = true;
        mem = BaseSemantics::MemoryCellState::promote(state->memoryState());
    }

    // Erase memory that has never been written (i.e., cells that sprang into existence by reading an address) of which appears
    // to have been recently popped from the stack.
    CellErasurePredicate predicate(ops, ops->readRegister(cpu->stackPointerRegister()), ignorePoppedMemory_);
    if (mem)
        mem->eraseMatchingCells(predicate);

    BaseSemantics::Formatter fmt;
    fmt.set_show_latest_writers(false);
    fmt.set_show_properties(false);
    std::ostringstream ss;
    ss <<(*state+fmt);
    return ss.str();
}
 void visit(SgNode *node) {
     SgAsmBlock *block = isSgAsmBlock(node);
     if (block && block->has_instructions()) {
         using namespace rose::BinaryAnalysis::InstructionSemantics2;
         const RegisterDictionary *regdict = RegisterDictionary::dictionary_i386();
         SymbolicSemantics::RiscOperatorsPtr ops = SymbolicSemantics::RiscOperators::instance(regdict);
         ops->computingDefiners(SymbolicSemantics::TRACK_ALL_DEFINERS); // only used so we can test that it works
         BaseSemantics::DispatcherPtr dispatcher = DispatcherX86::instance(ops, 32);
         const SgAsmStatementPtrList &stmts = block->get_statementList();
         for (SgAsmStatementPtrList::const_iterator si=stmts.begin(); si!=stmts.end(); ++si) {
             SgAsmX86Instruction *insn = isSgAsmX86Instruction(*si);
             if (insn) {
                 std::cout <<unparseInstructionWithAddress(insn) <<"\n";
                 dispatcher->processInstruction(insn);
                 std::cout <<*ops <<"\n";
             }
         }
     }
 }
 rose_addr_t run(const P2::Partitioner &partitioner, const Settings &settings,
                 const std::set<rose_addr_t> &breakpoints = std::set<rose_addr_t>()) {
     for (size_t nInsns=0; nInsns<settings.insnLimit; ++nInsns) {
         rose_addr_t ip = ops_->readRegister(regIp_)->get_number();
         if (ip == returnMarker_ || (nInsns>0 && breakpoints.find(ip)!=breakpoints.end()))
             return ip;
         SgAsmInstruction *insn = partitioner.instructionProvider()[ip];
         if (!insn)
             throw std::runtime_error("no instruction at " + StringUtility::addrToString(ip));
         if (settings.traceInsns && ::mlog[TRACE])
             ::mlog[TRACE] <<unparseInstructionWithAddress(insn) <<"\n";
         cpu_->processInstruction(insn);
     }
     throw std::runtime_error("execution limit exceeded ("+StringUtility::plural(settings.insnLimit, "instructions")+")");
 }
Example #8
0
/* Analyze a single interpretation a block at a time */
static void
analyze_interp(SgAsmInterpretation *interp)
{
    /* Get the set of all instructions except instructions that are part of left-over blocks. */
    struct AllInstructions: public SgSimpleProcessing, public std::map<rose_addr_t, SgAsmX86Instruction*> {
        void visit(SgNode *node) {
            SgAsmX86Instruction *insn = isSgAsmX86Instruction(node);
            SgAsmFunction *func = SageInterface::getEnclosingNode<SgAsmFunction>(insn);
            if (func && 0==(func->get_reason() & SgAsmFunction::FUNC_LEFTOVERS))
                insert(std::make_pair(insn->get_address(), insn));
        }
    } insns;
    insns.traverse(interp, postorder);

    while (!insns.empty()) {
        std::cout <<"=====================================================================================\n"
                  <<"=== Starting a new basic block                                                    ===\n"
                  <<"=====================================================================================\n";
        AllInstructions::iterator si = insns.begin();
        SgAsmX86Instruction *insn = si->second;
        insns.erase(si);

        BaseSemantics::RiscOperatorsPtr operators = make_ops();
        BaseSemantics::Formatter formatter;
        formatter.set_suppress_initial_values();
        formatter.set_show_latest_writers(do_usedef);
        BaseSemantics::DispatcherPtr dispatcher;
        if (do_trace) {
            // Enable RiscOperators tracing, but turn off a bunch of info that makes comparisons with a known good answer
            // difficult.
            Sawyer::Message::PrefixPtr prefix = Sawyer::Message::Prefix::instance();
            prefix->showProgramName(false);
            prefix->showThreadId(false);
            prefix->showElapsedTime(false);
            prefix->showFacilityName(Sawyer::Message::Prefix::NEVER);
            prefix->showImportance(false);
            Sawyer::Message::UnformattedSinkPtr sink = Sawyer::Message::StreamSink::instance(std::cout);
            sink->prefix(prefix);
            sink->defaultPropertiesNS().useColor = false;
            TraceSemantics::RiscOperatorsPtr trace = TraceSemantics::RiscOperators::instance(operators);
            trace->stream().destination(sink);
            trace->stream().enable();
            dispatcher = DispatcherX86::instance(trace, 32);
        } else {
            dispatcher = DispatcherX86::instance(operators, 32);
        }
        operators->set_solver(make_solver());

        // The fpstatus_top register must have a concrete value if we'll use the x86 floating-point stack (e.g., st(0))
        if (const RegisterDescriptor *REG_FPSTATUS_TOP = regdict->lookup("fpstatus_top")) {
            BaseSemantics::SValuePtr st_top = operators->number_(REG_FPSTATUS_TOP->get_nbits(), 0);
            operators->writeRegister(*REG_FPSTATUS_TOP, st_top);
        }

#if SEMANTIC_DOMAIN == SYMBOLIC_DOMAIN
        BaseSemantics::SValuePtr orig_esp;
        if (do_test_subst) {
            // Only request the orig_esp if we're going to use it later because it causes an esp value to be instantiated
            // in the state, which is printed in the output, and thus changes the answer.
            BaseSemantics::RegisterStateGeneric::promote(operators->get_state()->get_register_state())->initialize_large();
            orig_esp = operators->readRegister(*regdict->lookup("esp"));
            std::cout <<"Original state:\n" <<*operators;
        }
#endif

        /* Perform semantic analysis for each instruction in this block. The block ends when we no longer know the value of
         * the instruction pointer or the instruction pointer refers to an instruction that doesn't exist or which has already
         * been processed. */
        while (1) {
            /* Analyze current instruction */
            std::cout <<"\n" <<unparseInstructionWithAddress(insn) <<"\n";
            try {
                dispatcher->processInstruction(insn);
#   if 0 /*DEBUGGING [Robb P. Matzke 2013-05-01]*/
                show_state(operators); // for comparing RegisterStateGeneric with the old RegisterStateX86 output
#   else
                std::cout <<(*operators + formatter);
#   endif
            } catch (const BaseSemantics::Exception &e) {
                std::cout <<e <<"\n";
            }

            /* Never follow CALL instructions */
            if (insn->get_kind()==x86_call || insn->get_kind()==x86_farcall)
                break;

            /* Get next instruction of this block */
            BaseSemantics::SValuePtr ip = operators->readRegister(dispatcher->findRegister("eip"));
            if (!ip->is_number())
                break;
            rose_addr_t next_addr = ip->get_number();
            si = insns.find(next_addr);
            if (si==insns.end()) break;
            insn = si->second;
            insns.erase(si);
        }

        // Test substitution on the symbolic state.
#if SEMANTIC_DOMAIN == SYMBOLIC_DOMAIN
        if (do_test_subst) {
            SymbolicSemantics::SValuePtr from = SymbolicSemantics::SValue::promote(orig_esp);
            BaseSemantics::SValuePtr newvar = operators->undefined_(32);
            newvar->set_comment("frame_pointer");
            SymbolicSemantics::SValuePtr to =
                SymbolicSemantics::SValue::promote(operators->add(newvar, operators->number_(32, 4)));
            std::cout <<"Substituting from " <<*from <<" to " <<*to <<"\n";
            SymbolicSemantics::RiscOperators::promote(operators)->substitute(from, to);
            std::cout <<"Substituted state:\n" <<(*operators+formatter);
        }
#endif
    }
}
Example #9
0
int
main(int argc, char *argv[])
{
    SgProject *project = frontend(argc, argv);
    SgAsmInterpretation *interp = SageInterface::querySubTree<SgAsmInterpretation>(project).back();
    AllInstructions insns(interp);
    SgAsmGenericHeader *header = interp->get_headers()->get_headers().front();
    rose_addr_t start_va = header->get_base_va() + header->get_entry_rva();

#if SEMANTIC_API == OLD_API
    MyPolicy operators;
    X86InstructionSemantics<MyPolicy, MyValueType> dispatcher(operators);
#else
    BaseSemantics::RiscOperatorsPtr operators = make_ops();
    BaseSemantics::DispatcherPtr dispatcher = DispatcherX86::instance(operators);
#endif

    struct sigaction sa;
    sa.sa_handler = alarm_handler;
    sigemptyset(&sa.sa_mask);
    sa.sa_flags = 0;
    sigaction(SIGALRM, &sa, NULL);
    alarm(timeout);
    struct timeval start_time;
    std::cout <<"test starting...\n";
    gettimeofday(&start_time, NULL);

    size_t ninsns = 0;
    while (!had_alarm) {
        rose_addr_t va = start_va;
        while (SgAsmInstruction *insn = insns.fetch(va)) {
            //std::cerr <<unparseInstructionWithAddress(insn) <<"\n";
#if SEMANTIC_API == OLD_API
            dispatcher.processInstruction(isSgAsmx86Instruction(insn));
            ++ninsns;
#if SEMANTIC_DOMAIN == MULTI_DOMAIN
            // multi-semantics ValueType has no is_known() or get_known(). We need to invoke it on a specific subpolicy.
            PartialSymbolicSemantics::ValueType<32> ip = operators.readRegister<32>("eip")
                                                         .get_subvalue(MyMultiSemanticsClass::SP0());
#else
            MyValueType<32> ip = operators.readRegister<32>("eip");
#endif
            if (!ip.is_known())
                break;
            va = ip.known_value();
#else
            dispatcher->processInstruction(insn);
            ++ninsns;
            BaseSemantics::SValuePtr ip = operators->readRegister(dispatcher->findRegister("eip"));
            if (!ip->is_number())
                break;
            va = ip->get_number();
#endif
            if (had_alarm)
                break;
        }
    }

#if SEMANTIC_API == OLD_API
    MyValueType<32> eax = operators.readRegister<32>("eax");
    std::cerr <<"eax = " <<eax <<"\n";
#else
    BaseSemantics::SValuePtr eax = operators->readRegister(dispatcher->findRegister("eax"));
#if SEMANTIC_DOMAIN == MULTI_DOMAIN
    // This is entirely optional, but the output looks better if it has the names of the subdomains.
    std::cerr <<"eax = " <<(*eax + MultiSemantics::RiscOperators::promote(operators)->get_formatter()) <<"\n";
#else
    std::cerr <<"eax = " <<*eax <<"\n";
#endif
#endif

    struct timeval stop_time;
    gettimeofday(&stop_time, NULL);
    double elapsed = ((double)stop_time.tv_sec-start_time.tv_sec) + 1e-6*((double)stop_time.tv_usec-start_time.tv_usec);
    if (elapsed < timeout/4.0)
        std::cout <<"warning: test did not run for a sufficiently long time; output may contain a high degree of error.\n";
    std::cout <<"number of instructions:  " <<ninsns <<"\n"
              <<"elapsed time:            " <<elapsed <<" seconds\n"
              <<"semantic execution rate: " <<(ninsns/elapsed) <<" instructions/second\n";
    return 0;
}
Example #10
0
/* Analyze a single interpretation a block at a time */
static void
analyze_interp(SgAsmInterpretation *interp)
{
    /* Get the set of all instructions except instructions that are part of left-over blocks. */
    struct AllInstructions: public SgSimpleProcessing, public std::map<rose_addr_t, SgAsmx86Instruction*> {
        void visit(SgNode *node) {
            SgAsmx86Instruction *insn = isSgAsmx86Instruction(node);
            SgAsmFunction *func = SageInterface::getEnclosingNode<SgAsmFunction>(insn);
            if (func && 0==(func->get_reason() & SgAsmFunction::FUNC_LEFTOVERS))
                insert(std::make_pair(insn->get_address(), insn));
        }
    } insns;
    insns.traverse(interp, postorder);

    while (!insns.empty()) {
        std::cout <<"=====================================================================================\n"
                  <<"=== Starting a new basic block                                                    ===\n"
                  <<"=====================================================================================\n";
        AllInstructions::iterator si = insns.begin();
        SgAsmx86Instruction *insn = si->second;
        insns.erase(si);

#if SEMANTIC_API == NEW_API
        BaseSemantics::RiscOperatorsPtr operators = make_ops();
        BaseSemantics::Formatter formatter;
        formatter.set_suppress_initial_values();
        BaseSemantics::DispatcherPtr dispatcher;
        if (do_trace) {
            TraceSemantics::RiscOperatorsPtr trace = TraceSemantics::RiscOperators::instance(operators);
            trace->set_stream(stdout);
            dispatcher = DispatcherX86::instance(trace);
        } else {
            dispatcher = DispatcherX86::instance(operators);
        }
        operators->set_solver(make_solver());
#else   // OLD_API
        typedef X86InstructionSemantics<MyPolicy, MyValueType> MyDispatcher;
        MyPolicy operators;
        MyDispatcher dispatcher(operators);
#   if SEMANTIC_DOMAIN == SYMBOLIC_DOMAIN
        operators.set_solver(make_solver());
        SymbolicSemantics::Formatter formatter;
        formatter.expr_formatter.do_rename = true;
        formatter.expr_formatter.add_renames = true;
#   elif SEMANTIC_DOMAIN != FINDCONST_DOMAIN && SEMANTIC_DOMAIN != FINDCONSTABI_DOMAIN
        BaseSemantics::Formatter formatter;
#   endif
#endif

#if SEMANTIC_DOMAIN == SYMBOLIC_DOMAIN && SEMANTIC_API == NEW_API
        BaseSemantics::SValuePtr orig_esp;
        if (do_test_subst) {
            // Only request the orig_esp if we're going to use it later because it causes an esp value to be instantiated
            // in the state, which is printed in the output, and thus changes the answer.
            BaseSemantics::RegisterStateGeneric::promote(operators->get_state()->get_register_state())->initialize_large();
            orig_esp = operators->readRegister(*regdict->lookup("esp"));
            std::cout <<"Original state:\n" <<*operators;
        }
#endif

        /* Perform semantic analysis for each instruction in this block. The block ends when we no longer know the value of
         * the instruction pointer or the instruction pointer refers to an instruction that doesn't exist or which has already
         * been processed. */
        while (1) {
            /* Analyze current instruction */
            std::cout <<"\n" <<unparseInstructionWithAddress(insn) <<"\n";
#if SEMANTIC_API == NEW_API
            try {
                dispatcher->processInstruction(insn);
#   if 0 /*DEBUGGING [Robb P. Matzke 2013-05-01]*/
                show_state(operators); // for comparing RegisterStateGeneric with the old RegisterStateX86 output
#   else
                std::cout <<(*operators + formatter);
#   endif
            } catch (const BaseSemantics::Exception &e) {
                std::cout <<e <<"\n";
            }
#else       // OLD API
            try {
                dispatcher.processInstruction(insn);
#   if SEMANTIC_DOMAIN == FINDCONST_DOMAIN || SEMANTIC_DOMAIN == FINDCONSTABI_DOMAIN
                operators.print(std::cout);
#   else
                operators.print(std::cout, formatter);
#   endif
            } catch (const MyDispatcher::Exception &e) {
                std::cout <<e <<"\n";
                break;
#   if SEMANTIC_DOMAIN == PARTSYM_DOMAIN
            } catch (const MyPolicy::Exception &e) {
                std::cout <<e <<"\n";
                break;
#   endif
            } catch (const SMTSolver::Exception &e) {
                std::cout <<e <<" [ "<<unparseInstructionWithAddress(insn) <<"]\n";
                break;
            }
#endif

            /* Never follow CALL instructions */
            if (insn->get_kind()==x86_call || insn->get_kind()==x86_farcall)
                break;

            /* Get next instruction of this block */
#if SEMANTIC_API == NEW_API
            BaseSemantics::SValuePtr ip = operators->readRegister(dispatcher->findRegister("eip"));
            if (!ip->is_number())
                break;
            rose_addr_t next_addr = ip->get_number();
#else       // OLD_API
#   if SEMANTIC_DOMAIN == PARTSYM_DOMAIN || SEMANTIC_DOMAIN == SYMBOLIC_DOMAIN
            MyValueType<32> ip = operators.get_ip();
            if (!ip.is_known()) break;
            rose_addr_t next_addr = ip.known_value();
#   elif SEMANTIC_DOMAIN == NULL_DOMAIN || SEMANTIC_DOMAIN == INTERVAL_DOMAIN
            MyValueType<32> ip = operators.readRegister<32>(dispatcher.REG_EIP);
            if (!ip.is_known()) break;
            rose_addr_t next_addr = ip.known_value();
#   elif SEMANTIC_DOMAIN == MULTI_DOMAIN
            PartialSymbolicSemantics::ValueType<32> ip = operators.readRegister<32>(dispatcher.REG_EIP)
                                                         .get_subvalue(MyMultiSemanticsClass::SP0());
            if (!ip.is_known()) break;
            rose_addr_t next_addr = ip.known_value();
#   else
            if (operators.newIp->get().name) break;
            rose_addr_t next_addr = operators.newIp->get().offset;
#   endif
#endif
            si = insns.find(next_addr);
            if (si==insns.end()) break;
            insn = si->second;
            insns.erase(si);
        }

        // Test substitution on the symbolic state.
#if SEMANTIC_DOMAIN == SYMBOLIC_DOMAIN && SEMANTIC_API == NEW_API
        if (do_test_subst) {
            SymbolicSemantics::SValuePtr from = SymbolicSemantics::SValue::promote(orig_esp);
            BaseSemantics::SValuePtr newvar = operators->undefined_(32);
            newvar->set_comment("frame_pointer");
            SymbolicSemantics::SValuePtr to =
                SymbolicSemantics::SValue::promote(operators->add(newvar, operators->number_(32, 4)));
            std::cout <<"Substituting from " <<*from <<" to " <<*to <<"\n";
            SymbolicSemantics::RiscOperators::promote(operators)->substitute(from, to);
            std::cout <<"Substituted state:\n" <<(*operators+formatter);
        }
#endif
    }
}