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                 System.out.println("goo " + goo);
  34                 File f = new File(goo);
  35                 if (!f.exists() || !f.isDirectory()) continue;
  36                 String[] jars = f.list();
  37                 for(int i=0; i<jars.length; i++)
  38                     sootcp += File.pathSeparator + f.getPath() + File.separatorChar + jars[i];
  39             }
  40         }
  41         args2[args.length - 1] = "-w";
  42         args2[args.length + 0] = "-p";
  43         args2[args.length + 1] = "cg";
  44         args2[args.length + 2] = "enabled:false";
  45         args2[args.length + 3] = "-p";
  46         args2[args.length + 4] = "wjap";
  47         args2[args.length + 5] = "enabled:false";
  48         args2[args.length + 6] = "-p";
  49         args2[args.length + 7] = "jtp";
  50         args2[args.length + 8] = "enabled:false";
  51         //args2[args.length + 9] = "-keep-line-number";
  52         args2[args.length + 9] = "-allow-phantom-refs";
  53         args2[args.length + 10] = "-allow-phantom-refs";
  54         args2[args.length + 11] = "-cp";
  55         args2[args.length + 12] = sootcp;
  56         System.out.println("sootcp => " + sootcp);
  57         args2[args.length + 13] = args[args.length-1];
  58         for(int i=0; i<args2.length; i++) System.out.println("args2["+i+"] = " + args2[i]);
  59         soot.Main.main(args2);
  60     }
  61
  62     // The main loop //////////////////////////////////////////////////////////////////////////////
  63
  64     public void internalTransform(String phaseName, Map options) {
  65         System.out.println("begun");
  66         init();
  67         List ac = new LinkedList();
  68         for(Iterator it = Scene.v().getClasses().iterator(); it.hasNext();) {
  69             SootClass sc = (SootClass)it.next();
  70             sc.setLibraryClass();
  71         }
  72         for(Iterator it = Scene.v().getClasses().iterator(); it.hasNext();) {
  73             SootClass sc = (SootClass)it.next();
  74             if (implementsGladiator(sc)) {
  75                 System.out.println("  application class: " + sc.getName());
  76                 System.out.println("  application class: " + getArenaForGladiator(sc).getName());
  77                 sc.setApplicationClass();
  78                 getArenaForGladiator(sc).setApplicationClass();
  79                 ac.add(sc);
  80                 ac.add(getArenaForGladiator(sc));
  81                 /*
  82                 for(Iterator i2 = sc.getMethods().iterator(); i2.hasNext();) {
  83                     SootMethod m = (SootMethod)i2.next();
  84                     if (m.isConcrete()) m.retrieveActiveBody();
  85                 }
  86                 for(Iterator i2 = getArenaForGladiator(sc).getMethods().iterator(); i2.hasNext();) {
  87                     SootMethod m = (SootMethod)i2.next();
  88                     if (m.isConcrete()) m.retrieveActiveBody();
  89                 }
  90                 */
  91             }
  92         }
  93         for(Iterator it = ac.iterator(); it.hasNext();) {
  94             SootClass sc = (SootClass)it.next();
  95             if (sc.isInterface() || !implementsGladiator(sc)) continue;
  96             processGladiatorClass(sc);
  97         }
  98         for(Iterator it = ac.iterator(); it.hasNext();) {
  99             SootClass sc = (SootClass)it.next();
 100             if (sc.isInterface()) continue;
 101             processClass(sc);
 102         }
 103     }
 104
 105     // Initializers //////////////////////////////////////////////////////////////////////////////
 106
 107     public Type objectType;
 108     public List arrayCopyTypes = new LinkedList();
 109     public SootMethodRef arrayCopy;
 110     public void init() {
 111         objectType = Scene.v().getSootClass("java.lang.Object").getType();
 112         arrayCopyTypes.add(objectType);
 113         arrayCopyTypes.add(IntType.v());
 114         arrayCopyTypes.add(objectType);
 115         arrayCopyTypes.add(IntType.v());
 116         arrayCopyTypes.add(IntType.v());
 117         arrayCopy =
 118             Scene.v().makeMethodRef(Scene.v().getSootClass("java.lang.System"),
 119                                     "arraycopy",
 120                                     arrayCopyTypes,
 121                                     VoidType.v(),
 122                                     true);
 123     }
 124
 125     // Helpers //////////////////////////////////////////////////////////////////////////////
 126
 127     private int tfr = 0;
 128     public Local newLocal(Body b, Type t) {
 129         Local l = Jimple.v().newLocal("tmpRef" + (tfr++), t);
 130         b.getLocals().add(l);
 131         return l;
 132     }
 133
 134     public Local viaLocal(Value v, Body b, Unit u) {
 135         Local l = newLocal(b, v.getType());
 136         if (v instanceof IdentityRef) b.getUnits().insertBefore(Jimple.v().newIdentityStmt(l, v), u);
 137         else b.getUnits().insertBefore(Jimple.v().newAssignStmt(l, v), u);
 138         return l;
 139     }
 140
 141     boolean          implementsGladiator(SootClass c)  { return c.implementsInterface("org.ibex.arenaj.Gladiator"); }
 142     boolean          implementsGladiator(Type t) {return (t instanceof RefType)&&implementsGladiator(((RefType)t).getSootClass());}
 143     String           getArenaName(SootClass sc) { return sc.getName().substring(0, sc.getName().lastIndexOf('$')); }
 144     String           getGladiatorName(SootClass sc) { return sc.getName().substring(sc.getName().lastIndexOf('$')+1); }
 145     SootClass        getArenaForGladiator(SootClass sc) { return Scene.v().getSootClass(getArenaName(sc)); }
 146     InstanceFieldRef newIFR(Body b, SootFieldRef fr) { return Jimple.v().newInstanceFieldRef(b.getThisLocal(), fr); }
 147     void             assign(Body b, Value left, Value right) { b.getUnits().add(Jimple.v().newAssignStmt(left, right)); }
 148     void             assign(Body b, Value l, Value r, Stmt w) { b.getUnits().insertBefore(Jimple.v().newAssignStmt(l, r), w); }
 149     Type             getSliceElementType(Type t) { return implementsGladiator(t) ? IntType.v() : t; }
 150     SootFieldRef     getSliceForField(SootField f)    { return getSliceForField(f.makeRef()); }
 151     SootFieldRef     getSliceForField(SootFieldRef f) {
 152         return Scene.v().makeFieldRef(getArenaForGladiator(f.declaringClass()),
 153                                       getGladiatorName(f.declaringClass())+"$$"+f.name(),
 154                                       getSliceElementType(f.type()).makeArrayType(),
 155                                       false);
 156     }
 157
 158
 159     // Operations performed on the Gladiator class //////////////////////////////////////////////////////////////////////////
 160
 161     public void processGladiatorClass(SootClass sc) {
 162         SootClass mc = getArenaForGladiator(sc);
 163         String subname = sc.getShortName().substring(sc.getShortName().lastIndexOf('$')+1);
 164         String incFuncName = subname + "$$inc";
 165         SootMethod method = new SootMethod(incFuncName, new LinkedList(), IntType.v(), Modifier.PRIVATE, new LinkedList());
 166
 167         mc.setApplicationClass();
 168         SootMethod initMethod = mc.getMethod("<init>", new LinkedList());
 169         if (!initMethod.hasActiveBody()) initMethod.setActiveBody((JimpleBody)Jimple.v().newBody(initMethod));
 170         Body mcInitBody = initMethod.getActiveBody();
 171
 172         mc.addMethod(method);
 173         Body body = Jimple.v().newBody(method);
 174         method.setActiveBody(body);
 175         ((JimpleBody)body).insertIdentityStmts();
 176         Local l  =  newLocal(body, IntType.v());
 177         Local l2 =  newLocal(body, IntType.v());
 178         Local l3 =  newLocal(body, IntType.v());
 179         Local l4 =  newLocal(body, IntType.v());
 180
 181         Stmt where = ((JimpleBody)mcInitBody).getFirstNonIdentityStmt();
 182         SootField maxField = new SootField(subname + "$$max", IntType.v());
 183         mc.addField(maxField);
 184         assign(mcInitBody, newIFR(mcInitBody, maxField.makeRef()), IntConstant.v(initialSize), where);
 185
 186         SootField sfr = new SootField(subname + "$$size", IntType.v());
 187         mc.addField(sfr);
 188         assign(mcInitBody, newIFR(mcInitBody, sfr.makeRef()), IntConstant.v(0), where);
 189
 190         assign(body, l,                                 newIFR(body, sfr.makeRef()));
 191         assign(body, l2,                                Jimple.v().newAddExpr(l, IntConstant.v(1)));
 192         assign(body, newIFR(body, sfr.makeRef()),       l2);
 193         assign(body, l3,                                newIFR(body, maxField.makeRef()));
 194
 195         Stmt returnStmt = Jimple.v().newReturnStmt(l2);
 196         body.getUnits().add(Jimple.v().newIfStmt(Jimple.v().newLtExpr(l2, l3), returnStmt));
 197
 198         assign(body,  l4,                               Jimple.v().newShlExpr(l3, IntConstant.v(1)));
 199         assign(body,  newIFR(body, maxField.makeRef()), l4);
 200
 201         for(Iterator it = sc.getFields().iterator(); it.hasNext();) {
 202             SootField f = (SootField)it.next();
 203             Type t      = getSliceElementType(f.getType());
 204             mc.addField(f = new SootField(getGladiatorName(sc) + "$$" + f.getName(), t.makeArrayType(), 0));
 205
 206             Expr newArr = Jimple.v().newNewArrayExpr(t, IntConstant.v(initialSize));
 207             Local newArrLocal = newLocal(mcInitBody, f.getType());
 208             mcInitBody.getUnits().addFirst(Jimple.v().newAssignStmt(newIFR(mcInitBody, f.makeRef()), newArrLocal));
 209             mcInitBody.getUnits().addFirst(Jimple.v().newAssignStmt(newArrLocal, newArr));
 210
 211             Local ll0 = newLocal(body, f.getType());
 212             Local ll = newLocal(body, f.getType());
 213             assign(body, ll0, newIFR(body,  f.makeRef()));
 214             assign(body, ll,  Jimple.v().newNewArrayExpr(t, l4));
 215
 216             List args = new LinkedList();
 217             args.add(ll0);
 218             args.add(IntConstant.v(0));
 219             args.add(ll);
 220             args.add(IntConstant.v(0));
 221             args.add(l3);
 222             body.getUnits().add(Jimple.v().newInvokeStmt(Jimple.v().newStaticInvokeExpr(arrayCopy, args)));
 223             assign(body, newIFR(body,  f.makeRef()), ll);
 224         }
 225
 226         for(Iterator it = sc.getMethods().iterator(); it.hasNext();) {
 227             SootMethod m = (SootMethod)it.next();
 228             if (!m.isConcrete()) continue;
 229             boolean doremove = true;
 230             Body mbody = m.getActiveBody();
 231             if (implementsGladiator(m.getDeclaringClass()) && m.getName().equals("<init>")) {
 232                 doremove = false;
 233                 SootClass c = m.getDeclaringClass();
 234                 String name = /*c.getShortName().substring(c.getShortName().lastIndexOf('$')+1) + */"$init";
 235                 List li = m.getParameterTypes();
 236                 c.removeMethod(m);
 237                 SootMethod nm = new SootMethod(name, li, implementsGladiator(m.getReturnType()) ? IntType.v() : m.getReturnType());
 238                 JimpleBody bod = Jimple.v().newBody(nm);
 239                 bod.importBodyContentsFrom(m.getActiveBody());
 240                 nm.setActiveBody(bod);
 241                 m = nm;
 242                 mbody = bod;
 243                 mbody.getUnits().remove(((JimpleBody)mbody).getFirstNonIdentityStmt());
 244                 mbody.getUnits().remove(((JimpleBody)mbody).getFirstNonIdentityStmt());
 245             } else {
 246                 System.out.println("examining " + sc.getName() + "." + m.getSignature());
 247                 m.retrieveActiveBody();
 248             }
 249             if (m.isStatic()) continue;
 250
 251             String name = sc.getShortName().substring(sc.getShortName().lastIndexOf('$')+1) + "$$" + m.getName();
 252             List list = new LinkedList();
 253             list.addAll(m.getParameterTypes());
 254             list.add(IntType.v());
 255             for(Iterator i = list.iterator(); i.hasNext();) System.out.println(i.next());
 256             SootMethod m2 = new SootMethod(name, list, m.getReturnType());
 257             getArenaForGladiator(sc).addMethod(m2);
 258
 259             JimpleBody ab = (JimpleBody)Jimple.v().newBody(m2);
 260             ab.importBodyContentsFrom(mbody);
 261             m2.setActiveBody(ab);
 262             Local loc = Jimple.v().newLocal("tmpRef" + (tfr++), getArenaForGladiator(sc).getType());
 263             ab.getLocals().add(loc);
 264             // FIXME: insert assignment to this
 265
 266             for(Iterator z = ab.getLocals().iterator(); z.hasNext();) {
 267                 Local loc2 = (Local)z.next();
 268                 if (implementsGladiator(loc2.getType())) {
 269                     loc2.setType(IntType.v());
 270                 }
 271             }
 272
 273             Chain units = ab.getUnits();
 274             boolean touched = false;
 275             Local loc0 = Jimple.v().newLocal("tmpRef" + (tfr++), getArenaForGladiator(sc).getType());
 276             ab.getLocals().add(loc0);
 277             for(Iterator stmtIt = units.snapshotIterator(); stmtIt.hasNext();) {
 278                 Stmt s = (Stmt) stmtIt.next();
 279                 if (s instanceof IdentityStmt) {
 280                     IdentityStmt is = (IdentityStmt)s;
 281                     Local left = (Local)is.getLeftOp();
 282                     if (is.getRightOp() instanceof ThisRef) {
 283                         left.setType(IntType.v());
 284                         is.getRightOpBox().setValue(Jimple.v().newParameterRef(IntType.v(), m.getParameterCount()));
 285                         if (!touched) {
 286                             units.addFirst(Jimple.v().newIdentityStmt(loc0, Jimple.v().newThisRef(getArenaForGladiator(sc).getType())));
 287                             touched = true;
 288                         }
 289                     }
 290                 }
 291
 292                 for(Iterator i = s.getUseAndDefBoxes().iterator(); i.hasNext();) {
 293                     Object o = i.next();
 294                     if (o instanceof ValueBox) {
 295                         ValueBox vb = (ValueBox)o;
 296                         o = vb.getValue();
 297                         /*
 298                         if (o instanceof Local && implementsGladiator(((Local)o).getType())) {
 299                             System.out.println("thunking");
 300                             vb.setValue(loc0);
 301                         }
 302                         */
 303                         if (vb.getValue() instanceof ThisRef) {
 304                             System.out.println(s);
 305                             vb.setValue(loc);
 306                         }
 307                     }
 308                 }
 309
 310             }
 311
 312             if (doremove) sc.removeMethod(m);
 313
 314         }
 315         body.getUnits().add(returnStmt);
 316     }
 317
 318     // Operations performed on all classes ////////////////////////////////////////////////////////////////////////////
 319
 320     public void processClass(SootClass c) {
 321         for(Iterator it = c.getFields().iterator(); it.hasNext();) {
 322             SootField f = (SootField)it.next();
 323             Type t = f.getType();
 324             if (t instanceof RefType) {
 325                 RefType rt = (RefType)t;
 326                 SootClass sc = rt.getSootClass();
 327                 if (implementsGladiator(sc)) f.setType(IntType.v());
 328             } else if (t instanceof ArrayType) {
 329                 ArrayType at = (ArrayType)t;
 330                 t = at.getElementType();
 331                 if (!(t instanceof RefType)) continue;
 332                 RefType rt = (RefType)t;
 333                 SootClass sc = rt.getSootClass();
 334                 if (implementsGladiator(sc)) f.setType(IntType.v().makeArrayType());
 335             }
 336         }
 337
 338         List list = new LinkedList(); list.addAll(c.getMethods());
 339         for(Iterator it = list.iterator(); it.hasNext();) {
 340             SootMethod m = (SootMethod)it.next();
 341             Body b = null;
 342             if (m.getName().endsWith("$$inc")) continue;
 343             if (m.hasActiveBody()) b = processBody(m.getActiveBody(), c, m);
 344             List l2 = new LinkedList();
 345             List l = m.getParameterTypes();
 346             for(Iterator it2 = l.iterator(); it2.hasNext();) {
 347                 Type t = (Type)it2.next();
 348                 l2.add(implementsGladiator(t) ? IntType.v() : t);
 349             }
 350             Type t = m.getReturnType();
 351             if (implementsGladiator(t)) {
 352                 t = IntType.v();
 353                 if (m.hasActiveBody()) {
 354                     Body bod = m.getActiveBody();
 355                     for(Iterator stmtIt = bod.getUnits().snapshotIterator(); stmtIt.hasNext();) {
 356                         Stmt s = (Stmt) stmtIt.next();
 357                         if (s instanceof ReturnStmt) {
 358                             if (((ReturnStmt)s).getOp().getType() instanceof NullType) {
 359                                 ((ReturnStmt)s).getOpBox().setValue(IntConstant.v(-1));
 360                             }
 361                         }
 362                     }
 363                 }
 364             }
 365             String name = m.getName();
 366             SootMethod meth = new SootMethod(name, l2, implementsGladiator(t) ? IntType.v() : t, m.getModifiers());
 367             if (b != null) {
 368                 JimpleBody b2 = Jimple.v().newBody(meth);
 369                 b2.importBodyContentsFrom(b);
 370                 meth.setActiveBody(b2);
 371             }
 372             c.removeMethod(m);
 373             c.addMethod(meth);
 374         }
 375
 376     }
 377
 378     protected Body processBody(Body body, SootClass ownerClass, SootMethod smeth) {
 379         if (body instanceof JimpleBody) {
 380             JimpleBody b2 = Jimple.v().newBody(smeth);
 381             b2.importBodyContentsFrom(body);
 382             body = b2;
 383         }
 384         Chain units = body.getUnits();
 385         System.out.println("processBody("+body.getMethod()+")");
 386         for(Iterator it = body.getLocals().snapshotIterator(); it.hasNext();) {
 387             Local l = (Local)it.next();
 388             if (implementsGladiator(l.getType())) l.setType(IntType.v());
 389         }
 390         for(int qq=0; qq<2; qq++) for(Iterator stmtIt = units.snapshotIterator(); stmtIt.hasNext();) {
 391             Stmt s = (Stmt) stmtIt.next();
 392             if (s instanceof DefinitionStmt) {
 393                 DefinitionStmt ds = (DefinitionStmt)s;
 394                 if (ds.getLeftOp().getType() instanceof PrimType && ds.getRightOp().getType() instanceof NullType) {
 395                     ds.getRightOpBox().setValue(IntConstant.v(-1));
 396                 }
 397             }
 398             if (implementsGladiator(smeth.getReturnType()) && s instanceof ReturnStmt)
 399                 if (((ReturnStmt)s).getOp().getType() instanceof NullType)
 400                     ((ReturnStmt)s).getOpBox().setValue(IntConstant.v(-1));
 401             List l = s.getUseAndDefBoxes();
 402             for(Iterator it = l.iterator(); it.hasNext();) {
 403                 Object o = it.next();
 404                 if (o instanceof ValueBox) {
 405                     ValueBox vb = (ValueBox)o;
 406                     Value v = vb.getValue();
 407
 408                     if (v instanceof BinopExpr) {
 409                         BinopExpr boe = (BinopExpr)v;
 410                         Type t1 = boe.getOp1().getType();
 411                         Type t2 = boe.getOp2().getType();
 412                         if (t1 instanceof PrimType && t2 instanceof NullType) boe.setOp2(IntConstant.v(-1));
 413                         if (t2 instanceof PrimType && t1 instanceof NullType) boe.setOp1(IntConstant.v(-1));
 414                     }
 415
 416                     if (v instanceof NewExpr) {
 417                         NewExpr ne = (NewExpr)v;
 418                         if (implementsGladiator(ne.getBaseType())) {
 419                             SootClass sc = ((RefType)ne.getBaseType()).getSootClass();
 420                             SootClass mc = getArenaForGladiator(sc);
 421                             String incFuncName = sc.getShortName().substring(sc.getShortName().lastIndexOf('$')+1) + "$$inc";
 422                             SootMethodRef smr = Scene.v().makeMethodRef(mc, incFuncName, new LinkedList(), IntType.v(), false);
 423                             Expr invokeExpr = Jimple.v().newSpecialInvokeExpr(body.getThisLocal(), smr);
 424                             Local ll = viaLocal(invokeExpr, body, s);
 425                             vb.setValue(ll);
 426                             v = ll;
 427                             continue;
 428                         }
 429                     } else
 430
 431                     if (v instanceof InvokeExpr) {
 432                         InvokeExpr ie = (InvokeExpr)v;
 433                         SootMethodRef mr = ie.getMethodRef();
 434                         String name = mr.name();
 435                         if (v instanceof InstanceInvokeExpr && implementsGladiator(mr.declaringClass())) {
 436                             InstanceInvokeExpr iie = (InstanceInvokeExpr)v;
 437                             List li = new LinkedList();
 438                             li.addAll(iie.getArgs());
 439                             LinkedList pl = new LinkedList();
 440                             for(Iterator it2 = mr.parameterTypes().iterator(); it2.hasNext();) {
 441                                 Type t = (Type)it2.next();
 442                                 pl.add(implementsGladiator(t) ? IntType.v() : t);
 443                             }
 444                             if (mr.name().equals("<init>") && implementsGladiator(mr.declaringClass())) {
 445                                 name = "$init";
 446                                 //li.remove(0);
 447                                 //pl.remove(0);
 448                             }
 449                             pl.add(IntType.v());
 450                             li.add(viaLocal(iie.getBase(),body,s));
 451                             SootClass sc = mr.declaringClass();
 452                             name = sc.getShortName().substring(sc.getShortName().lastIndexOf('$')+1) + "$$" + name;
 453                             mr = Scene.v().makeMethodRef(getArenaForGladiator(sc),
 454                                                          name,
 455                                                          pl,
 456                                                          implementsGladiator(mr.returnType()) ? IntType.v() : mr.returnType(),
 457                                                          false);
 458                             ie = Jimple.v().newVirtualInvokeExpr(body.getThisLocal(), mr, li);
 459                             vb.setValue(v = ie);
 460
 461                         } else if (!(v instanceof StaticInvokeExpr)) {
 462                             List l0 = mr.parameterTypes();
 463                             List l2 = new LinkedList();
 464                             for(Iterator it2 = l0.iterator(); it2.hasNext();) {
 465                                 Type t = (Type)it2.next();
 466                                 l2.add(implementsGladiator(t) ? IntType.v() : t);
 467                             }
 468                             mr = Scene.v().makeMethodRef(mr.declaringClass(),
 469                                                          mr.name(),
 470                                                          l2,
 471                                                          implementsGladiator(mr.returnType()) ? IntType.v() : mr.returnType(),
 472                                                          mr.isStatic());
 473                             ie.setMethodRef(mr);
 474                             vb.setValue(v = ie);
 475                         }
 476
 477                         for(int i=0; i<ie.getArgCount(); i++) {
 478                             ValueBox b = ie.getArgBox(i);
 479                             Value val = b.getValue();
 480                             if (mr.parameterType(i) instanceof RefType && val.getType() instanceof PrimType) {
 481                                 SootClass intClass = Scene.v().getSootClass("java.lang.Integer");
 482                                 List typelist = new LinkedList();
 483                                 typelist.add(IntType.v());
 484                                 SootMethod intMethod = intClass.getMethod("<init>", typelist);
 485                                 Local loc = viaLocal(Jimple.v().newNewExpr(RefType.v(intClass)), body, s);
 486                                 List list = new LinkedList();
 487                                 list.add(val);
 488                                 units.insertBefore(Jimple.v().newInvokeStmt(Jimple.v().newSpecialInvokeExpr(loc,
 489                                                                                                             intMethod.makeRef(),
 490                                                                                                             list)),
 491                                                    s);
 492                                 b.setValue(loc);
 493                             }
 494                             if (val != null && val.getType() instanceof NullType && mr.parameterType(i) instanceof IntType) {
 495                                 b.setValue(IntConstant.v(-1));
 496                             }
 497                         }
 498
 499
 500                     } else if (v instanceof CastExpr) {
 501                         CastExpr ce = (CastExpr)v;
 502                         if (implementsGladiator(ce.getCastType())) {
 503                             SootClass mc = getArenaForGladiator(((RefType)ce.getCastType()).getSootClass());
 504                             SootClass ic = Scene.v().getSootClass("java.lang.Integer");
 505                             ce.setCastType(ic.getType());
 506
 507                             Local l1 = Jimple.v().newLocal("tmpRef" + (tfr++), ic.getType()); body.getLocals().add(l1);
 508                             Local l2 = Jimple.v().newLocal("tmpRef" + (tfr++), IntType.v()); body.getLocals().add(l2);
 509
 510                             Stmt s2 = Jimple.v().newAssignStmt(l1, Jimple.v().newCastExpr(ce.getOp(), ic.getType()));
 511                             body.getUnits().insertBefore(s2, s);
 512
 513                             Stmt isNull = Jimple.v().newAssignStmt(l2, IntConstant.v(-1));
 514                             body.getUnits().insertAfter(isNull, s2);
 515
 516                             Stmt ifStmt = Jimple.v().newIfStmt(Jimple.v().newEqExpr(l1, NullConstant.v()), s);
 517                             body.getUnits().insertAfter(ifStmt, isNull);
 518
 519                             SootMethodRef mr = Scene.v().makeMethodRef(ic, "intValue", new LinkedList(), IntType.v(), false);
 520                             Stmt isNotNull =
 521                                 Jimple.v().newAssignStmt(l2, Jimple.v().newVirtualInvokeExpr(l1, mr, new LinkedList()));
 522                             body.getUnits().insertAfter(isNotNull, ifStmt);
 523
 524                             vb.setValue(l2);
 525                             qq = 0;  // ???
 526                             break;
 527                         }
 528
 529                     } else if (v instanceof InstanceFieldRef) {
 530                         InstanceFieldRef ifr = (InstanceFieldRef)v;
 531                         SootFieldRef fr = ifr.getFieldRef();
 532                         Type t = fr.type();
 533                         if (implementsGladiator(fr.declaringClass()) && fr.name().equals("this$0")) {
 534                             System.out.println("******************");
 535                             vb.setValue(body.getThisLocal());
 536                             System.out.println("s is " + s);
 537                         } else if (implementsGladiator(fr.declaringClass())) {
 538                             SootClass mc = getArenaForGladiator(fr.declaringClass());
 539                             InstanceFieldRef sfr = newIFR(body,  getSliceForField(fr));
 540                             vb.setValue(Jimple.v().newArrayRef(viaLocal(sfr, body, s), ifr.getBase()));
 541                         }
 542                         if ((t instanceof RefType) && implementsGladiator(((RefType)t).getSootClass())) {
 543                             SootClass tc = ((RefType)t).getSootClass();
 544                             SootClass mc = getArenaForGladiator(tc);
 545                             ifr.setFieldRef(Scene.v().makeFieldRef(mc, fr.name(), IntType.v(), false));
 546                         }
 547                     }
 548
 549                 }
 550             }
 551         }
 552         body.validate();
 553         return body;
 554     }
 555 }