src/org/ibex/arenaj/Main.java

   1 package org.ibex.arenaj;
   2 import soot.*;
   3 import soot.jimple.*;
   4 import soot.util.*;
   5 import java.io.*;
   6 import java.util.*;
   7
   8 public class Main extends SceneTransformer {
   9
  10     public static final int initialSize = 1000;
  11
  12     private static Main instance = new Main();
  13     private Main() { }
  14     public static Main v() { return instance; }
  15
  16     public static void main(String[] args) throws Exception {
  17         if(args.length == 0) {
  18             System.out.println("Syntax: java " + v().getClass().getName() + " [soot options]");
  19             System.exit(0);
  20         }
  21         PackManager.v().getPack("wjtp").add(new Transform("wjtp.tx", Main.v()));
  22         String[] args2 = new String[args.length + 14];
  23         System.arraycopy(args, 0, args2, 0, args.length-1);
  24         String sootcp =
  25             System.getProperty("java.class.path") +
  26             File.pathSeparator +
  27             System.getProperty("sun.boot.class.path");
  28         String extDirs = System.getProperty("java.ext.dirs");
  29         if (extDirs != null) {
  30             StringTokenizer st = new StringTokenizer(extDirs, File.pathSeparatorChar+"");
  31             while(st.hasMoreTokens()) {
  32                 String goo = st.nextToken();
  33                 File f = new File(goo);
  34                 if (!f.exists() || !f.isDirectory()) continue;
  35                 String[] jars = f.list();
  36                 for(int i=0; i<jars.length; i++)
  37                     sootcp += File.pathSeparator + f.getPath() + File.separatorChar + jars[i];
  38             }
  39         }
  40         args2[args.length - 1] = "-w";
  41         args2[args.length + 0] = "-p";
  42         args2[args.length + 1] = "cg";
  43         args2[args.length + 2] = "enabled:false";
  44         args2[args.length + 3] = "-p";
  45         args2[args.length + 4] = "wjap";
  46         args2[args.length + 5] = "enabled:false";
  47         args2[args.length + 6] = "-p";
  48         args2[args.length + 7] = "jtp";
  49         args2[args.length + 8] = "enabled:false";
  50         args2[args.length + 9] = "-allow-phantom-refs";
  51         args2[args.length + 10] = "-allow-phantom-refs";
  52         args2[args.length + 11] = "-cp";
  53         args2[args.length + 12] = sootcp;
  54         System.out.println("sootcp => " + sootcp);
  55         args2[args.length + 13] = args[args.length-1];
  56         for(int i=0; i<args2.length; i++) System.out.println("args2["+i+"] = " + args2[i]);
  57         soot.Main.main(args2);
  58     }
  59
  60     // The main loop //////////////////////////////////////////////////////////////////////////////
  61
  62     public void internalTransform(String phaseName, Map options) {
  63         init();
  64         List ac = new LinkedList();
  65         for(Iterator it = Scene.v().getClasses().iterator(); it.hasNext();) {
  66             SootClass sc = (SootClass)it.next();
  67             sc.setLibraryClass();
  68         }
  69         for(Iterator it = Scene.v().getClasses().iterator(); it.hasNext();) {
  70             SootClass sc = (SootClass)it.next();
  71             if (!implementsGladiator(sc)) continue;
  72             System.out.println("  application class: " + sc.getName());
  73             System.out.println("  application class: " + getArenaForGladiator(sc).getName());
  74             sc.setApplicationClass();
  75             getArenaForGladiator(sc).setApplicationClass();
  76             ac.add(sc);
  77             ac.add(getArenaForGladiator(sc));
  78         }
  79         for(Iterator it = ac.iterator(); it.hasNext();) {
  80             SootClass sc = (SootClass)it.next();
  81             if (sc.isInterface() || !implementsGladiator(sc)) continue;
  82             processGladiatorClass(sc);
  83         }
  84         for(Iterator it = ac.iterator(); it.hasNext();) {
  85             SootClass sc = (SootClass)it.next();
  86             if (sc.isInterface()) continue;
  87             processClass(sc);
  88         }
  89     }
  90
  91     // Initializers //////////////////////////////////////////////////////////////////////////////
  92
  93     public Type objectType;
  94     public List arrayCopyTypes = new LinkedList();
  95     public SootMethodRef arrayCopy;
  96     public void init() {
  97         objectType = Scene.v().getSootClass("java.lang.Object").getType();
  98         arrayCopyTypes.add(objectType);
  99         arrayCopyTypes.add(IntType.v());
 100         arrayCopyTypes.add(objectType);
 101         arrayCopyTypes.add(IntType.v());
 102         arrayCopyTypes.add(IntType.v());
 103         arrayCopy =
 104             Scene.v().makeMethodRef(Scene.v().getSootClass("java.lang.System"),
 105                                     "arraycopy",
 106                                     arrayCopyTypes,
 107                                     VoidType.v(),
 108                                     true);
 109     }
 110
 111     // Helpers //////////////////////////////////////////////////////////////////////////////
 112
 113     private int tfr = 0;
 114     public Local newLocal(Body b, Type t) {
 115         Local l = Jimple.v().newLocal("tmpRef" + (tfr++), t);
 116         b.getLocals().add(l);
 117         return l;
 118     }
 119
 120     public Local viaLocal(Value v, Body b, Unit u) {
 121         Local l = newLocal(b, v.getType());
 122         if (v instanceof IdentityRef) b.getUnits().insertBefore(Jimple.v().newIdentityStmt(l, v), u);
 123         else b.getUnits().insertBefore(Jimple.v().newAssignStmt(l, v), u);
 124         return l;
 125     }
 126
 127     boolean          implementsGladiator(SootClass c)  { return c.implementsInterface("org.ibex.arenaj.Gladiator"); }
 128     boolean          implementsGladiator(Type t) {return (t instanceof RefType)&&implementsGladiator(((RefType)t).getSootClass());}
 129     String           getArenaName(SootClass sc) { return sc.getName().substring(0, sc.getName().lastIndexOf('$')); }
 130     String           getGladiatorName(SootClass sc) { return sc.getName().substring(sc.getName().lastIndexOf('$')+1); }
 131     SootClass        getArenaForGladiator(SootClass sc) { return Scene.v().getSootClass(getArenaName(sc)); }
 132     InstanceFieldRef newIFR(Body b, SootFieldRef fr) { return Jimple.v().newInstanceFieldRef(b.getThisLocal(), fr); }
 133     void             assign(Body b, Value left, Value right) { b.getUnits().add(Jimple.v().newAssignStmt(left, right)); }
 134     void             assign(Body b, Value l, Value r, Stmt w) { b.getUnits().insertBefore(Jimple.v().newAssignStmt(l, r), w); }
 135     Type             getSliceElementType(Type t) { return implementsGladiator(t) ? IntType.v() : t; }
 136     SootFieldRef     getSliceForField(SootField f)    { return getSliceForField(f.makeRef()); }
 137     SootFieldRef     getSliceForField(SootFieldRef f) {
 138         return Scene.v().makeFieldRef(getArenaForGladiator(f.declaringClass()),
 139                                       getGladiatorName(f.declaringClass())+"$$"+f.name(),
 140                                       getSliceElementType(f.type()).makeArrayType(),
 141                                       false);
 142     }
 143
 144
 145     // Operations performed on the Gladiator class //////////////////////////////////////////////////////////////////////////
 146
 147     public SootMethod createIncMethod(SootClass sc) {
 148         String incFuncName = getGladiatorName(sc) + "$$inc";
 149         SootClass arena = getArenaForGladiator(sc);
 150         SootMethod method = new SootMethod(incFuncName, new LinkedList(), IntType.v(), Modifier.PRIVATE, new LinkedList());
 151         arena.addMethod(method);
 152         Body incBody = Jimple.v().newBody(method);
 153         method.setActiveBody(incBody);
 154         ((JimpleBody)incBody).insertIdentityStmts();
 155         return method;
 156     }
 157
 158     public void processGladiatorClass(SootClass sc) {
 159
 160         // Set up the Arena zero-arg constructor
 161
 162         SootClass            arena = getArenaForGladiator(sc);
 163         SootMethod arenaInitMethod = null;
 164         for(Iterator it = arena.getMethods().iterator(); it.hasNext();) {
 165             SootMethod m = (SootMethod)it.next();
 166             if (m.getName().equals("<init>")) {
 167                 if (arenaInitMethod != null) throw new Error("class " + arena.getName() + " has two constructors");
 168                 arenaInitMethod = m;
 169             }
 170         }
 171         JimpleBody   arenaInitBody = (JimpleBody)arenaInitMethod.getActiveBody();
 172
 173         SootField maxField = new SootField(getGladiatorName(sc) + "$$max", IntType.v());
 174         arena.addField(maxField);
 175         assign(arenaInitBody, newIFR(arenaInitBody, maxField.makeRef()), IntConstant.v(initialSize),
 176                arenaInitBody.getFirstNonIdentityStmt());
 177
 178         SootField sfr = new SootField(getGladiatorName(sc) + "$$size", IntType.v());
 179         arena.addField(sfr);
 180         assign(arenaInitBody, newIFR(arenaInitBody, sfr.makeRef()), IntConstant.v(0),
 181                arenaInitBody.getFirstNonIdentityStmt());
 182
 183         SootMethod incMethod = createIncMethod(sc);
 184         Body         incBody = incMethod.getActiveBody();
 185
 186
 187         // Now build the $$inc method
 188
 189         Local l  =  newLocal(incBody, IntType.v());
 190         Local l2 =  newLocal(incBody, IntType.v());
 191         Local l3 =  newLocal(incBody, IntType.v());
 192         Local l4 =  newLocal(incBody, IntType.v());
 193
 194         assign(incBody, l,                                 newIFR(incBody, sfr.makeRef()));
 195         assign(incBody, l2,                                Jimple.v().newAddExpr(l, IntConstant.v(1)));
 196         assign(incBody, newIFR(incBody, sfr.makeRef()),       l2);
 197         assign(incBody, l3,                                newIFR(incBody, maxField.makeRef()));
 198
 199         Stmt returnStmt = Jimple.v().newReturnStmt(l2);
 200         incBody.getUnits().add(Jimple.v().newIfStmt(Jimple.v().newLtExpr(l2, l3), returnStmt));
 201
 202         assign(incBody,  l4,                               Jimple.v().newShlExpr(l3, IntConstant.v(1)));
 203         assign(incBody,  newIFR(incBody, maxField.makeRef()), l4);
 204
 205
 206         // Finally, iterate over the Gladiator's fields, updating the $$inc method and Arena's zero-arg constructor as we go
 207
 208         for(Iterator it = sc.getFields().iterator(); it.hasNext();) {
 209             SootField f = (SootField)it.next();
 210             Type t      = getSliceElementType(f.getType());
 211             arena.addField(f = new SootField(getGladiatorName(sc) + "$$" + f.getName(), t.makeArrayType(), 0));
 212
 213             Expr newArr = Jimple.v().newNewArrayExpr(t, IntConstant.v(initialSize));
 214             Local newArrLocal = newLocal(arenaInitBody, f.getType());
 215             arenaInitBody.getUnits().addFirst(Jimple.v().newAssignStmt(newIFR(arenaInitBody, f.makeRef()), newArrLocal));
 216             arenaInitBody.getUnits().addFirst(Jimple.v().newAssignStmt(newArrLocal, newArr));
 217
 218             Local ll0 = newLocal(incBody, f.getType());
 219             Local ll = newLocal(incBody, f.getType());
 220             assign(incBody, ll0, newIFR(incBody,  f.makeRef()));
 221             assign(incBody, ll,  Jimple.v().newNewArrayExpr(t, l4));
 222
 223             List args = new LinkedList();
 224             args.add(ll0);
 225             args.add(IntConstant.v(0));
 226             args.add(ll);
 227             args.add(IntConstant.v(0));
 228             args.add(l3);
 229             incBody.getUnits().add(Jimple.v().newInvokeStmt(Jimple.v().newStaticInvokeExpr(arrayCopy, args)));
 230             assign(incBody, newIFR(incBody,  f.makeRef()), ll);
 231         }
 232
 233         for(Iterator it = sc.getMethods().iterator(); it.hasNext();) {
 234             SootMethod m = (SootMethod)it.next();
 235             if (!m.isConcrete()) continue;
 236             boolean doremove = true;
 237             Body mincBody = m.getActiveBody();
 238             if (implementsGladiator(m.getDeclaringClass()) && m.getName().equals("<init>")) {
 239                 System.out.println("processing ctor " + sc.getName() + "." + m.getSignature());
 240                 doremove = false;
 241                 SootClass c = m.getDeclaringClass();
 242                 String name = "$init";
 243                 List li = m.getParameterTypes();
 244                 c.removeMethod(m);
 245                 SootMethod nm = new SootMethod(name, li, implementsGladiator(m.getReturnType()) ? IntType.v() : m.getReturnType());
 246                 JimpleBody bod = Jimple.v().newBody(nm);
 247                 bod.importBodyContentsFrom(m.getActiveBody());
 248                 nm.setActiveBody(bod);
 249                 m = nm;
 250                 mincBody = bod;
 251
 252                 for(Iterator it2 = mincBody.getUnits().snapshotIterator(); it2.hasNext(); ) {
 253                     Unit u = (Unit)it2.next();
 254                     if (u instanceof DefinitionStmt) {
 255                         DefinitionStmt ds = (DefinitionStmt)u;
 256                         if (ds.getLeftOp() instanceof ThisRef)
 257                             mincBody.getUnits().remove(u);
 258                         else if (ds.getLeftOp() instanceof FieldRef) {
 259                             if (((FieldRef)ds.getLeftOp()).getFieldRef().name().endsWith("this$0"))
 260                                 mincBody.getUnits().remove(u);
 261                         }
 262                     } else if (u instanceof InvokeStmt) {
 263                         InvokeExpr ie = ((InvokeStmt)u).getInvokeExpr();
 264                         SootMethod meth = ie.getMethod();
 265                         System.out.println(meth.getName());
 266                         if (meth.getDeclaringClass().getName().equals("java.lang.Object") && meth.getName().equals("<init>"))
 267                             mincBody.getUnits().remove(u);
 268                     }
 269                 }
 270
 271             } else {
 272                 System.out.println("examining " + sc.getName() + "." + m.getSignature());
 273                 m.retrieveActiveBody();
 274             }
 275             if (m.isStatic()) continue;
 276
 277             String name = sc.getShortName().substring(sc.getShortName().lastIndexOf('$')+1) + "$$" + m.getName();
 278             List list = new LinkedList();
 279             list.addAll(m.getParameterTypes());
 280             list.add(IntType.v());
 281             SootMethod m2 = new SootMethod(name, list, m.getReturnType());
 282             getArenaForGladiator(sc).addMethod(m2);
 283
 284             JimpleBody ab = (JimpleBody)Jimple.v().newBody(m2);
 285             ab.importBodyContentsFrom(mincBody);
 286             m2.setActiveBody(ab);
 287             Local loc = Jimple.v().newLocal("tmpRef" + (tfr++), getArenaForGladiator(sc).getType());
 288             ab.getLocals().add(loc);
 289             // FIXME: insert assignment to this
 290
 291             for(Iterator z = ab.getLocals().iterator(); z.hasNext();) {
 292                 Local loc2 = (Local)z.next();
 293                 if (implementsGladiator(loc2.getType())) {
 294                     loc2.setType(IntType.v());
 295                 }
 296             }
 297
 298             Chain units = ab.getUnits();
 299             boolean touched = false;
 300             Local loc0 = Jimple.v().newLocal("tmpRef" + (tfr++), getArenaForGladiator(sc).getType());
 301             ab.getLocals().add(loc0);
 302             for(Iterator stmtIt = units.snapshotIterator(); stmtIt.hasNext();) {
 303                 Stmt s = (Stmt) stmtIt.next();
 304                 if (s instanceof IdentityStmt) {
 305                     IdentityStmt is = (IdentityStmt)s;
 306                     Local left = (Local)is.getLeftOp();
 307                     if (is.getRightOp() instanceof ThisRef) {
 308                         left.setType(IntType.v());
 309                         is.getRightOpBox().setValue(Jimple.v().newParameterRef(IntType.v(), m.getParameterCount()));
 310                         if (!touched) {
 311                             units.addFirst(Jimple.v().newIdentityStmt(loc0, Jimple.v().newThisRef(getArenaForGladiator(sc).getType())));
 312                             touched = true;
 313                         }
 314                     }
 315                 }
 316
 317                 for(Iterator i = s.getUseAndDefBoxes().iterator(); i.hasNext();) {
 318                     Object o = i.next();
 319                     if (o instanceof ValueBox) {
 320                         ValueBox vb = (ValueBox)o;
 321                         o = vb.getValue();
 322                         /*
 323                         if (o instanceof Local && implementsGladiator(((Local)o).getType())) {
 324                             System.out.println("thunking");
 325                             vb.setValue(loc0);
 326                         }
 327                         */
 328                         if (vb.getValue() instanceof ThisRef) {
 329                             vb.setValue(loc);
 330                         }
 331                     }
 332                 }
 333
 334             }
 335
 336             if (doremove) sc.removeMethod(m);
 337
 338         }
 339         incBody.getUnits().add(returnStmt);
 340     }
 341
 342     // Operations performed on all classes ////////////////////////////////////////////////////////////////////////////
 343
 344     public void processClass(SootClass c) {
 345         for(Iterator it = c.getFields().iterator(); it.hasNext();) {
 346             SootField f = (SootField)it.next();
 347             Type t = f.getType();
 348             if (t instanceof RefType) {
 349                 RefType rt = (RefType)t;
 350                 SootClass sc = rt.getSootClass();
 351                 if (implementsGladiator(sc)) f.setType(IntType.v());
 352             } else if (t instanceof ArrayType) {
 353                 ArrayType at = (ArrayType)t;
 354                 t = at.getElementType();
 355                 if (!(t instanceof RefType)) continue;
 356                 RefType rt = (RefType)t;
 357                 SootClass sc = rt.getSootClass();
 358                 if (implementsGladiator(sc)) f.setType(IntType.v().makeArrayType());
 359             }
 360         }
 361
 362         List list = new LinkedList(); list.addAll(c.getMethods());
 363         for(Iterator it = list.iterator(); it.hasNext();) {
 364             SootMethod m = (SootMethod)it.next();
 365             Body b = null;
 366             if (m.getName().endsWith("$$inc")) continue;
 367             if (m.hasActiveBody()) b = processBody(m.getActiveBody(), c, m);
 368             List l2 = new LinkedList();
 369             List l = m.getParameterTypes();
 370             for(Iterator it2 = l.iterator(); it2.hasNext();) {
 371                 Type t = (Type)it2.next();
 372                 l2.add(implementsGladiator(t) ? IntType.v() : t);
 373             }
 374             Type t = m.getReturnType();
 375             if (implementsGladiator(t)) {
 376                 t = IntType.v();
 377                 if (m.hasActiveBody()) {
 378                     Body bod = m.getActiveBody();
 379                     for(Iterator stmtIt = bod.getUnits().snapshotIterator(); stmtIt.hasNext();) {
 380                         Stmt s = (Stmt) stmtIt.next();
 381                         if (s instanceof ReturnStmt) {
 382                             if (((ReturnStmt)s).getOp().getType() instanceof NullType) {
 383                                 ((ReturnStmt)s).getOpBox().setValue(IntConstant.v(-1));
 384                             }
 385                         }
 386                     }
 387                 }
 388             }
 389             String name = m.getName();
 390             SootMethod meth = new SootMethod(name, l2, implementsGladiator(t) ? IntType.v() : t, m.getModifiers());
 391             if (b != null) {
 392                 JimpleBody b2 = Jimple.v().newBody(meth);
 393                 b2.importBodyContentsFrom(b);
 394                 meth.setActiveBody(b2);
 395             }
 396             c.removeMethod(m);
 397             c.addMethod(meth);
 398         }
 399
 400     }
 401
 402     protected Body processBody(Body body, SootClass ownerClass, SootMethod smeth) {
 403         if (body instanceof JimpleBody) {
 404             JimpleBody b2 = Jimple.v().newBody(smeth);
 405             b2.importBodyContentsFrom(body);
 406             body = b2;
 407         }
 408         Chain units = body.getUnits();
 409         for(Iterator it = body.getLocals().snapshotIterator(); it.hasNext();) {
 410             Local l = (Local)it.next();
 411             if (implementsGladiator(l.getType())) l.setType(IntType.v());
 412         }
 413         for(int qq=0; qq<2; qq++) for(Iterator stmtIt = units.snapshotIterator(); stmtIt.hasNext();) {
 414             Stmt s = (Stmt) stmtIt.next();
 415             if (s instanceof DefinitionStmt) {
 416                 DefinitionStmt ds = (DefinitionStmt)s;
 417                 if (ds.getLeftOp().getType() instanceof PrimType && ds.getRightOp().getType() instanceof NullType) {
 418                     ds.getRightOpBox().setValue(IntConstant.v(-1));
 419                 }
 420             }
 421             if (implementsGladiator(smeth.getReturnType()) && s instanceof ReturnStmt)
 422                 if (((ReturnStmt)s).getOp().getType() instanceof NullType)
 423                     ((ReturnStmt)s).getOpBox().setValue(IntConstant.v(-1));
 424             List l = s.getUseAndDefBoxes();
 425             for(Iterator it = l.iterator(); it.hasNext();) {
 426                 Object o = it.next();
 427                 if (o instanceof ValueBox) {
 428                     ValueBox vb = (ValueBox)o;
 429                     Value v = vb.getValue();
 430
 431                     if (v instanceof BinopExpr) {
 432                         BinopExpr boe = (BinopExpr)v;
 433                         Type t1 = boe.getOp1().getType();
 434                         Type t2 = boe.getOp2().getType();
 435                         if (t1 instanceof PrimType && t2 instanceof NullType) boe.setOp2(IntConstant.v(-1));
 436                         if (t2 instanceof PrimType && t1 instanceof NullType) boe.setOp1(IntConstant.v(-1));
 437                     }
 438
 439                     if (v instanceof NewExpr) {
 440                         NewExpr ne = (NewExpr)v;
 441                         if (implementsGladiator(ne.getBaseType())) {
 442                             SootClass sc = ((RefType)ne.getBaseType()).getSootClass();
 443                             SootClass arena = getArenaForGladiator(sc);
 444                             String incFuncName = sc.getShortName().substring(sc.getShortName().lastIndexOf('$')+1) + "$$inc";
 445                             SootMethodRef smr = Scene.v().makeMethodRef(arena, incFuncName, new LinkedList(), IntType.v(), false);
 446                             Expr invokeExpr = Jimple.v().newSpecialInvokeExpr(body.getThisLocal(), smr);
 447                             Local ll = viaLocal(invokeExpr, body, s);
 448                             vb.setValue(ll);
 449                             v = ll;
 450                             continue;
 451                         }
 452                     } else
 453
 454                     if (v instanceof InvokeExpr) {
 455                         InvokeExpr ie = (InvokeExpr)v;
 456                         SootMethodRef mr = ie.getMethodRef();
 457                         String name = mr.name();
 458                         if (v instanceof InstanceInvokeExpr && implementsGladiator(mr.declaringClass())) {
 459                             InstanceInvokeExpr iie = (InstanceInvokeExpr)v;
 460                             List li = new LinkedList();
 461                             li.addAll(iie.getArgs());
 462                             LinkedList pl = new LinkedList();
 463                             for(Iterator it2 = mr.parameterTypes().iterator(); it2.hasNext();) {
 464                                 Type t = (Type)it2.next();
 465                                 pl.add(implementsGladiator(t) ? IntType.v() : t);
 466                             }
 467                             if (mr.name().equals("<init>") && implementsGladiator(mr.declaringClass())) {
 468                                 name = "$init";
 469                                 //li.remove(0);
 470                                 //pl.remove(0);
 471                             }
 472                             pl.add(IntType.v());
 473                             li.add(viaLocal(iie.getBase(),body,s));
 474                             SootClass sc = mr.declaringClass();
 475                             name = sc.getShortName().substring(sc.getShortName().lastIndexOf('$')+1) + "$$" + name;
 476                             mr = Scene.v().makeMethodRef(getArenaForGladiator(sc),
 477                                                          name,
 478                                                          pl,
 479                                                          implementsGladiator(mr.returnType()) ? IntType.v() : mr.returnType(),
 480                                                          false);
 481                             ie = Jimple.v().newVirtualInvokeExpr(body.getThisLocal(), mr, li);
 482                             vb.setValue(v = ie);
 483
 484                         } else if (!(v instanceof StaticInvokeExpr)) {
 485                             List l0 = mr.parameterTypes();
 486                             List l2 = new LinkedList();
 487                             for(Iterator it2 = l0.iterator(); it2.hasNext();) {
 488                                 Type t = (Type)it2.next();
 489                                 l2.add(implementsGladiator(t) ? IntType.v() : t);
 490                             }
 491                             mr = Scene.v().makeMethodRef(mr.declaringClass(),
 492                                                          mr.name(),
 493                                                          l2,
 494                                                          implementsGladiator(mr.returnType()) ? IntType.v() : mr.returnType(),
 495                                                          mr.isStatic());
 496                             ie.setMethodRef(mr);
 497                             vb.setValue(v = ie);
 498                         }
 499
 500                         for(int i=0; i<ie.getArgCount(); i++) {
 501                             ValueBox b = ie.getArgBox(i);
 502                             Value val = b.getValue();
 503                             if (mr.parameterType(i) instanceof RefType && val.getType() instanceof PrimType) {
 504                                 SootClass intClass = Scene.v().getSootClass("java.lang.Integer");
 505                                 List typelist = new LinkedList();
 506                                 typelist.add(IntType.v());
 507                                 SootMethod intMethod = intClass.getMethod("<init>", typelist);
 508                                 Local loc = viaLocal(Jimple.v().newNewExpr(RefType.v(intClass)), body, s);
 509                                 List list = new LinkedList();
 510                                 list.add(val);
 511                                 units.insertBefore(Jimple.v().newInvokeStmt(Jimple.v().newSpecialInvokeExpr(loc,
 512                                                                                                             intMethod.makeRef(),
 513                                                                                                             list)),
 514                                                    s);
 515                                 b.setValue(loc);
 516                             }
 517                             if (val != null && val.getType() instanceof NullType && mr.parameterType(i) instanceof IntType) {
 518                                 b.setValue(IntConstant.v(-1));
 519                             }
 520                         }
 521
 522
 523                     } else if (v instanceof CastExpr) {
 524                         CastExpr ce = (CastExpr)v;
 525                         if (implementsGladiator(ce.getCastType())) {
 526                             SootClass arena = getArenaForGladiator(((RefType)ce.getCastType()).getSootClass());
 527                             SootClass ic = Scene.v().getSootClass("java.lang.Integer");
 528                             ce.setCastType(ic.getType());
 529
 530                             Local l1 = Jimple.v().newLocal("tmpRef" + (tfr++), ic.getType()); body.getLocals().add(l1);
 531                             Local l2 = Jimple.v().newLocal("tmpRef" + (tfr++), IntType.v()); body.getLocals().add(l2);
 532
 533                             Stmt s2 = Jimple.v().newAssignStmt(l1, Jimple.v().newCastExpr(ce.getOp(), ic.getType()));
 534                             body.getUnits().insertBefore(s2, s);
 535
 536                             Stmt isNull = Jimple.v().newAssignStmt(l2, IntConstant.v(-1));
 537                             body.getUnits().insertAfter(isNull, s2);
 538
 539                             Stmt ifStmt = Jimple.v().newIfStmt(Jimple.v().newEqExpr(l1, NullConstant.v()), s);
 540                             body.getUnits().insertAfter(ifStmt, isNull);
 541
 542                             SootMethodRef mr = Scene.v().makeMethodRef(ic, "intValue", new LinkedList(), IntType.v(), false);
 543                             Stmt isNotNull =
 544                                 Jimple.v().newAssignStmt(l2, Jimple.v().newVirtualInvokeExpr(l1, mr, new LinkedList()));
 545                             body.getUnits().insertAfter(isNotNull, ifStmt);
 546
 547                             vb.setValue(l2);
 548                             qq = 0;  // ???
 549                             break;
 550                         }
 551
 552                     } else if (v instanceof InstanceFieldRef) {
 553                         InstanceFieldRef ifr = (InstanceFieldRef)v;
 554                         SootFieldRef fr = ifr.getFieldRef();
 555                         Type t = fr.type();
 556                         if (implementsGladiator(fr.declaringClass()) && fr.name().equals("this$0")) {
 557                             vb.setValue(body.getThisLocal());
 558                         } else if (implementsGladiator(fr.declaringClass())) {
 559                             SootClass arena = getArenaForGladiator(fr.declaringClass());
 560                             InstanceFieldRef sfr = newIFR(body,  getSliceForField(fr));
 561                             vb.setValue(Jimple.v().newArrayRef(viaLocal(sfr, body, s), ifr.getBase()));
 562                         }
 563                         if ((t instanceof RefType) && implementsGladiator(((RefType)t).getSootClass())) {
 564                             SootClass tc = ((RefType)t).getSootClass();
 565                             SootClass arena = getArenaForGladiator(tc);
 566                             ifr.setFieldRef(Scene.v().makeFieldRef(arena, fr.name(), IntType.v(), false));
 567                         }
 568                     }
 569
 570                 }
 571             }
 572         }
 573         body.validate();
 574         return body;
 575     }
 576 }