Examples with SootMethod soot.SootMethod used on opensource projects

Example 46 with SootMethod

use of soot.SootMethod in project soot by Sable.

the class AsmMethodSource method emitLocals.

private void emitLocals() {
    JimpleBody jb = body;
    SootMethod m = jb.getMethod();
    Collection<Local> jbl = jb.getLocals();
    Collection<Unit> jbu = jb.getUnits();
    int iloc = 0;
    if (!m.isStatic()) {
        Local l = getLocal(iloc++);
        jbu.add(Jimple.v().newIdentityStmt(l, Jimple.v().newThisRef(m.getDeclaringClass().getType())));
    }
    int nrp = 0;
    for (Object ot : m.getParameterTypes()) {
        Type t = (Type) ot;
        Local l = getLocal(iloc);
        jbu.add(Jimple.v().newIdentityStmt(l, Jimple.v().newParameterRef(t, nrp++)));
        if (AsmUtil.isDWord(t))
            iloc += 2;
        else
            iloc++;
    }
    for (Local l : locals.values()) {
        jbl.add(l);
    }
}

Example 47 with SootMethod

use of soot.SootMethod in project soot by Sable.

the class ContextInsensitiveBuilder method preJimplify.

public void preJimplify() {
    boolean change = true;
    while (change) {
        change = false;
        for (Iterator<SootClass> cIt = new ArrayList<>(Scene.v().getClasses()).iterator(); cIt.hasNext(); ) {
            final SootClass c = cIt.next();
            for (final SootMethod m : c.getMethods()) {
                if (!m.isConcrete())
                    continue;
                if (m.isNative())
                    continue;
                if (m.isPhantom())
                    continue;
                if (!m.hasActiveBody()) {
                    change = true;
                    m.retrieveActiveBody();
                }
            }
        }
    }
}

Example 48 with SootMethod

use of soot.SootMethod in project soot by Sable.

the class MethodNodeFactory method caseParm.

public final Node caseParm(int index) {
    VarNode ret = pag.makeLocalVarNode(new Pair<SootMethod, Integer>(method, new Integer(index)), method.getParameterType(index), method);
    ret.setInterProcTarget();
    return ret;
}

Example 49 with SootMethod

use of soot.SootMethod in project soot by Sable.

the class MethodNodeFactory method caseThis.

public final Node caseThis() {
    VarNode ret = pag.makeLocalVarNode(new Pair<SootMethod, String>(method, PointsToAnalysis.THIS_NODE), method.getDeclaringClass().getType(), method);
    ret.setInterProcTarget();
    return ret;
}

Example 50 with SootMethod

use of soot.SootMethod in project soot by Sable.

the class DemandCSPointsTo method getFlowsToHelper.

protected Set<VarNode> getFlowsToHelper(AllocAndContext allocAndContext) {
    Set<VarNode> ret = new ArraySet<VarNode>();
    try {
        HashSet<VarAndContext> marked = new HashSet<VarAndContext>();
        Stack<VarAndContext> worklist = new Stack<VarAndContext>();
        Propagator<VarAndContext> p = new Propagator<VarAndContext>(marked, worklist);
        AllocNode alloc = allocAndContext.alloc;
        ImmutableStack<Integer> allocContext = allocAndContext.context;
        Node[] newBarNodes = pag.allocLookup(alloc);
        for (int i = 0; i < newBarNodes.length; i++) {
            VarNode v = (VarNode) newBarNodes[i];
            ret.add(v);
            p.prop(new VarAndContext(v, allocContext));
        }
        while (!worklist.isEmpty()) {
            incrementNodesTraversed();
            VarAndContext curVarAndContext = worklist.pop();
            if (DEBUG) {
                debugPrint("looking at " + curVarAndContext);
            }
            VarNode curVar = curVarAndContext.var;
            ImmutableStack<Integer> curContext = curVarAndContext.context;
            ret.add(curVar);
            // assign
            Collection<AssignEdge> assignEdges = filterAssigns(curVar, curContext, false, true);
            for (AssignEdge assignEdge : assignEdges) {
                VarNode dst = assignEdge.getDst();
                ImmutableStack<Integer> newContext = curContext;
                if (assignEdge.isReturnEdge()) {
                    if (!curContext.isEmpty()) {
                        if (!callEdgeInSCC(assignEdge)) {
                            assert assignEdge.getCallSite().equals(curContext.peek()) : assignEdge + " " + curContext;
                            newContext = curContext.pop();
                        } else {
                            newContext = popRecursiveCallSites(curContext);
                        }
                    }
                } else if (assignEdge.isParamEdge()) {
                    if (DEBUG)
                        debugPrint("entering call site " + assignEdge.getCallSite());
                    // if (!isRecursive(curContext, assignEdge)) {
                    // newContext = curContext.push(assignEdge
                    // .getCallSite());
                    // }
                    newContext = pushWithRecursionCheck(curContext, assignEdge);
                }
                if (assignEdge.isReturnEdge() && curContext.isEmpty() && csInfo.isVirtCall(assignEdge.getCallSite())) {
                    Set<SootMethod> targets = refineCallSite(assignEdge.getCallSite(), newContext);
                    if (!targets.contains(((LocalVarNode) assignEdge.getDst()).getMethod())) {
                        continue;
                    }
                }
                if (dst instanceof GlobalVarNode) {
                    newContext = EMPTY_CALLSTACK;
                }
                p.prop(new VarAndContext(dst, newContext));
            }
            // putfield_bars
            Set<VarNode> matchTargets = vMatches.vMatchLookup(curVar);
            Node[] pfTargets = pag.storeLookup(curVar);
            for (int i = 0; i < pfTargets.length; i++) {
                FieldRefNode frNode = (FieldRefNode) pfTargets[i];
                final VarNode storeBase = frNode.getBase();
                SparkField field = frNode.getField();
                // FieldRefNode>(curVar, frNode);
                for (Pair<VarNode, VarNode> load : fieldToLoads.get(field)) {
                    final VarNode loadBase = load.getO2();
                    final PointsToSetInternal loadBaseP2Set = loadBase.getP2Set();
                    final PointsToSetInternal storeBaseP2Set = storeBase.getP2Set();
                    final VarNode matchTgt = load.getO1();
                    if (matchTargets.contains(matchTgt)) {
                        if (DEBUG) {
                            debugPrint("match source " + matchTgt);
                        }
                        PointsToSetInternal intersection = SootUtil.constructIntersection(storeBaseP2Set, loadBaseP2Set, pag);
                        boolean checkField = fieldCheckHeuristic.validateMatchesForField(field);
                        if (checkField) {
                            AllocAndContextSet sharedAllocContexts = findContextsForAllocs(new VarAndContext(storeBase, curContext), intersection);
                            for (AllocAndContext curAllocAndContext : sharedAllocContexts) {
                                CallingContextSet upContexts;
                                if (fieldCheckHeuristic.validFromBothEnds(field)) {
                                    upContexts = findUpContextsForVar(curAllocAndContext, new VarContextAndUp(loadBase, EMPTY_CALLSTACK, EMPTY_CALLSTACK));
                                } else {
                                    upContexts = findVarContextsFromAlloc(curAllocAndContext, loadBase);
                                }
                                for (ImmutableStack<Integer> upContext : upContexts) {
                                    p.prop(new VarAndContext(matchTgt, upContext));
                                }
                            }
                        } else {
                            p.prop(new VarAndContext(matchTgt, EMPTY_CALLSTACK));
                        }
                    // h.handleMatchSrc(matchSrc, intersection,
                    // storeBase,
                    // loadBase, varAndContext, checkGetfield);
                    // if (h.terminate())
                    // return;
                    }
                }
            }
        }
        return ret;
    } catch (CallSiteException e) {
        allocAndContextCache.remove(allocAndContext);
        throw e;
    }
}