X-Git-Url: http://plrg.eecs.uci.edu/git/?p=IRC.git;a=blobdiff_plain;f=Robust%2Fsrc%2FIR%2FFlat%2FBuildCode.java;h=c18d65f23c7f5b068d0f31cc9a36165013745fca;hp=965fbed29694c43f02421f8355e3aa343c69b2ed;hb=bb567462fe31ae45b904c2f3236b456a782137b5;hpb=842143364178f59293f4d57914657c3b0b442ead

diff --git a/Robust/src/IR/Flat/BuildCode.java b/Robust/src/IR/Flat/BuildCode.java
index 965fbed2..c18d65f2 100644
--- a/Robust/src/IR/Flat/BuildCode.java
+++ b/Robust/src/IR/Flat/BuildCode.java
@@ -6,6 +6,7 @@ import IR.Tree.DNFFlagAtom;
 import IR.Tree.TagExpressionList;
 import IR.Tree.OffsetNode;
 import IR.*;
+import IR.Tree.JavaBuilder;
 
 import java.util.*;
 import java.io.*;
@@ -41,7 +42,7 @@ public class BuildCode {
   public static String arraytype="ArrayObject";
   public static int flagcount = 0;
   Virtual virtualcalls;
-  TypeUtil typeutil;
+  public TypeUtil typeutil;
   protected int maxtaskparams=0;
   protected int maxcount=0;
   ClassDescriptor[] cdarray;
@@ -52,16 +53,26 @@ public class BuildCode {
   Hashtable<String, ClassDescriptor> printedfieldstbl;
   int globaldefscount=0;
   boolean mgcstaticinit = false;
-  
-  int boundschknum = 0;
+  JavaBuilder javabuilder;
+  String strObjType;
+
+
+  public BuildCode(State st, Hashtable temptovar, TypeUtil typeutil, CallGraph callgraph, JavaBuilder javabuilder) {
+    this(st, temptovar, typeutil, null, callgraph, javabuilder);
+  }
 
   public BuildCode(State st, Hashtable temptovar, TypeUtil typeutil, CallGraph callgraph) {
-    this(st, temptovar, typeutil, null, callgraph);
+    this(st, temptovar, typeutil, null, callgraph, null);
   }
 
   public BuildCode(State st, Hashtable temptovar, TypeUtil typeutil, SafetyAnalysis sa, CallGraph callgraph) {
+    this(st, temptovar, typeutil, sa, callgraph, null);
+  }
+
+  public BuildCode(State st, Hashtable temptovar, TypeUtil typeutil, SafetyAnalysis sa, CallGraph callgraph, JavaBuilder javabuilder) {
     this.sa=sa;
     state=st;
+    this.javabuilder=javabuilder;
     this.callgraph=callgraph;
     this.temptovar=temptovar;
     paramstable=new Hashtable();
@@ -69,16 +80,19 @@ public class BuildCode {
     fieldorder=new Hashtable();
     flagorder=new Hashtable();
     this.typeutil=typeutil;
-    State.logEvent("Virtual");    
+    State.logEvent("Virtual");
     virtualcalls=new Virtual(state, null, callgraph);
     printedfieldstbl = new Hashtable<String, ClassDescriptor>();
+    extensions = new Vector<BuildCodeExtension>();
+    this.strObjType = 
+      "struct "+
+      typeutil.getClass( TypeUtil.ObjectClass ).getSafeSymbol();
   }
 
   /** The buildCode method outputs C code for all the methods.  The Flat
    * versions of the methods must already be generated and stored in
    * the State object. */
 
-
   public void buildCode() {
     /* Create output streams to write to */
     PrintWriter outclassdefs=null;
@@ -97,6 +111,10 @@ public class BuildCode {
 
     try {
       buildCodeSetup(); //EXTENSION POINT
+      for(BuildCodeExtension bcx: extensions) {
+        bcx.buildCodeSetup();
+      }
+
       outstructs=new CodePrinter(new FileOutputStream(PREFIX+"structdefs.h"), true);
       outmethodheader=new CodePrinter(new FileOutputStream(PREFIX+"methodheaders.h"), true);
       outclassdefs=new CodePrinter(new FileOutputStream(PREFIX+"classdefs.h"), true);
@@ -105,15 +123,15 @@ public class BuildCode {
       outmethod=new CodePrinter(new FileOutputStream(PREFIX+"methods.c"), true);
       outvirtual=new CodePrinter(new FileOutputStream(PREFIX+"virtualtable.h"), true);
       if (state.TASK) {
-	outtask=new CodePrinter(new FileOutputStream(PREFIX+"task.h"), true);
-	outtaskdefs=new CodePrinter(new FileOutputStream(PREFIX+"taskdefs.c"), true);
-	if (state.OPTIONAL) {
-	  outoptionalarrays=new CodePrinter(new FileOutputStream(PREFIX+"optionalarrays.c"), true);
-	  optionalheaders=new CodePrinter(new FileOutputStream(PREFIX+"optionalstruct.h"), true);
-	}
+        outtask=new CodePrinter(new FileOutputStream(PREFIX+"task.h"), true);
+        outtaskdefs=new CodePrinter(new FileOutputStream(PREFIX+"taskdefs.c"), true);
+        if (state.OPTIONAL) {
+          outoptionalarrays=new CodePrinter(new FileOutputStream(PREFIX+"optionalarrays.c"), true);
+          optionalheaders=new CodePrinter(new FileOutputStream(PREFIX+"optionalstruct.h"), true);
+        }
       }
       if (state.structfile!=null) {
-	outrepairstructs=new CodePrinter(new FileOutputStream(PREFIX+state.structfile+".struct"), true);
+        outrepairstructs=new CodePrinter(new FileOutputStream(PREFIX+state.structfile+".struct"), true);
       }
     } catch (Exception e) {
       e.printStackTrace();
@@ -139,23 +157,14 @@ public class BuildCode {
     }
 
     additionalIncludesMethodsHeader(outmethodheader);
+    for(BuildCodeExtension bcx: extensions) {
+      bcx.additionalIncludesMethodsHeader(outmethodheader);
+    }
 
     /* Output Structures */
     outputStructs(outstructs);
 
-    // Output the C class declarations
-    // These could mutually reference each other
-
-    outglobaldefs.println("#ifndef __GLOBALDEF_H_");
-    outglobaldefs.println("#define __GLOBALDEF_H_");
-    outglobaldefs.println("");
-    outglobaldefs.println("struct global_defs_t {");
-    outglobaldefs.println("  int size;");
-    outglobaldefs.println("  void * next;");
-    outglobaldefsprim.println("#ifndef __GLOBALDEFPRIM_H_");
-    outglobaldefsprim.println("#define __GLOBALDEFPRIM_H_");
-    outglobaldefsprim.println("");
-    outglobaldefsprim.println("struct global_defsprim_t {");
+    initOutputGlobals(outglobaldefs, outglobaldefsprim);
 
     outclassdefs.println("#ifndef __CLASSDEF_H_");
     outclassdefs.println("#define __CLASSDEF_H_");
@@ -171,28 +180,16 @@ public class BuildCode {
     outclassdefs.println("#include \"globaldefsprim.h\"");
     outclassdefs.println("#endif");
     outclassdefs.close();
-    
-    outglobaldefs.println("};");
-    outglobaldefs.println("");
-    outglobaldefs.println("extern struct global_defs_t * global_defs_p;");
-    outglobaldefs.println("#endif");
-    outglobaldefs.flush();
-    outglobaldefs.close();
 
-    outglobaldefsprim.println("};");
-    outglobaldefsprim.println("");
-    outglobaldefsprim.println("extern struct global_defsprim_t * global_defsprim_p;");
-    outglobaldefsprim.println("#endif");
-    outglobaldefsprim.flush();
-    outglobaldefsprim.close();
+    finalOutputGlobals(outglobaldefs, outglobaldefsprim);
 
     if (state.TASK) {
       /* Map flags to integers */
       /* The runtime keeps track of flags using these integers */
       it=state.getClassSymbolTable().getDescriptorsIterator();
       while(it.hasNext()) {
-	ClassDescriptor cn=(ClassDescriptor)it.next();
-	mapFlags(cn);
+        ClassDescriptor cn=(ClassDescriptor)it.next();
+        mapFlags(cn);
       }
       /* Generate Tasks */
       generateTaskStructs(outstructs, outmethodheader);
@@ -202,10 +199,12 @@ public class BuildCode {
       outputTaskTypes(outtask);
     }
 
-
     // an opportunity for subclasses to do extra
     // initialization
     preCodeGenInitialization();
+    for(BuildCodeExtension bcx: extensions) {
+      bcx.preCodeGenInitialization();
+    }
 
     State.logEvent("Start outputMethods");
     /* Build the actual methods */
@@ -213,15 +212,16 @@ public class BuildCode {
     State.logEvent("End outputMethods");
 
     // opportunity for subclasses to gen extra code
-    additionalCodeGen(outmethodheader,
-                      outstructs,
-                      outmethod);
-
+    additionalCodeGen(outmethodheader, outstructs, outmethod);
+    for(BuildCodeExtension bcx: extensions) {
+      bcx.additionalCodeGen(outmethodheader, outstructs, outmethod);
+    }
 
     if (state.TASK) {
       /* Output code for tasks */
       outputTaskCode(outtaskdefs, outmethod);
       outtaskdefs.close();
+      outtask.close();
       /* Record maximum number of task parameters */
       outstructs.println("#define MAXTASKPARAMS "+maxtaskparams);
     } else if (state.main!=null) {
@@ -233,6 +233,7 @@ public class BuildCode {
     if (state.TASK&&state.OPTIONAL) {
       generateOptionalArrays(outoptionalarrays, optionalheaders, state.getAnalysisResult(), state.getOptionalTaskDescriptors());
       outoptionalarrays.close();
+      optionalheaders.close();
     }
 
     /* Output structure definitions for repair tool */
@@ -246,14 +247,49 @@ public class BuildCode {
     outmethodheader.close();
     outmethod.close();
     outstructs.println("#endif");
+    outstructs.println();
     outstructs.close();
 
-
-
     postCodeGenCleanUp();
+    for(BuildCodeExtension bcx: extensions) {
+      bcx.postCodeGenCleanUp();
+    }
+
     State.logEvent("End of buildCode");
   }
 
+  protected void initOutputGlobals(PrintWriter outglobaldefs, PrintWriter outglobaldefsprim) {
+    // Output the C class declarations
+    // These could mutually reference each other
+    outglobaldefs.println("#ifndef __GLOBALDEF_H_");
+    outglobaldefs.println("#define __GLOBALDEF_H_");
+    outglobaldefs.println("");
+    outglobaldefs.println("struct global_defs_t {");
+    outglobaldefs.println("  int size;");
+    outglobaldefs.println("  void * next;");
+    outglobaldefs.println("  struct ArrayObject * classobjs;");
+    outglobaldefsprim.println("#ifndef __GLOBALDEFPRIM_H_");
+    outglobaldefsprim.println("#define __GLOBALDEFPRIM_H_");
+    outglobaldefsprim.println("");
+    outglobaldefsprim.println("struct global_defsprim_t {");
+  }
+
+  protected void finalOutputGlobals(PrintWriter outglobaldefs, PrintWriter outglobaldefsprim) {
+    outglobaldefs.println("};");
+    outglobaldefs.println("");
+    outglobaldefs.println("extern struct global_defs_t * global_defs_p;");
+    outglobaldefs.println("#endif");
+    outglobaldefs.flush();
+    outglobaldefs.close();
+
+    outglobaldefsprim.println("};");
+    outglobaldefsprim.println("");
+    outglobaldefsprim.println("extern struct global_defsprim_t * global_defsprim_p;");
+    outglobaldefsprim.println("#endif");
+    outglobaldefsprim.flush();
+    outglobaldefsprim.close();
+  }
+
   /* This method goes though the call graph and tag those methods that are
    * invoked inside static blocks
    */
@@ -262,28 +298,28 @@ public class BuildCode {
     MethodDescriptor current_md=null;
     HashSet tovisit=new HashSet();
     HashSet visited=new HashSet();
-    
+
     while(it_sclasses.hasNext()) {
       ClassDescriptor cd = (ClassDescriptor)it_sclasses.next();
       MethodDescriptor md = (MethodDescriptor)cd.getMethodTable().get("staticblocks");
       if(md != null) {
-	tovisit.add(md);
+        tovisit.add(md);
       }
     }
-    
+
     while(!tovisit.isEmpty()) {
       current_md=(MethodDescriptor)tovisit.iterator().next();
       tovisit.remove(current_md);
       visited.add(current_md);
       Iterator it_callee = this.callgraph.getCalleeSet(current_md).iterator();
       while(it_callee.hasNext()) {
-	Descriptor d = (Descriptor)it_callee.next();
-	if(d instanceof MethodDescriptor) {
-	  if(!visited.contains(d)) {
-	    ((MethodDescriptor)d).setIsInvokedByStatic(true);
-	    tovisit.add(d);
-	  }
-	}
+        Descriptor d = (Descriptor)it_callee.next();
+        if(d instanceof MethodDescriptor) {
+          if(!visited.contains(d)) {
+            ((MethodDescriptor)d).setIsInvokedByStatic(true);
+            tovisit.add(d);
+          }
+        }
       }
     }
   }
@@ -295,22 +331,57 @@ public class BuildCode {
     // execute all the static blocks and all the static field initializations
     SymbolTable sctbl = this.state.getSClassSymbolTable();
     Iterator it_sclasses = sctbl.getDescriptorsIterator();
-    if(it_sclasses.hasNext()) {
-      while(it_sclasses.hasNext()) {
-        ClassDescriptor t_cd = (ClassDescriptor)it_sclasses.next();
-        MethodDescriptor t_md = (MethodDescriptor)t_cd.getMethodTable().get("staticblocks");
-        if(t_md != null) {
-          outmethod.println("   {");
-          if ((GENERATEPRECISEGC) || (this.state.MULTICOREGC)) {
-            outmethod.print("       struct "+t_cd.getSafeSymbol()+t_md.getSafeSymbol()+"_"+t_md.getSafeMethodDescriptor()+"_params __parameterlist__={");
-            outmethod.println("0, NULL};");
-            outmethod.println("     "+t_cd.getSafeSymbol()+t_md.getSafeSymbol()+"_"+t_md.getSafeMethodDescriptor()+"(& __parameterlist__);");
-          } else {
-            outmethod.println("     "+t_cd.getSafeSymbol()+t_md.getSafeSymbol()+"_"+t_md.getSafeMethodDescriptor()+"();");
-          }
-          outmethod.println("   }");
-        }
-      }
+    Vector<ClassDescriptor> tooutput = new Vector<ClassDescriptor>();
+    Queue<ClassDescriptor> toprocess=new LinkedList<ClassDescriptor>();
+    Vector<ClassDescriptor> outputs = new Vector<ClassDescriptor>();
+    while(it_sclasses.hasNext()) {
+	ClassDescriptor t_cd = (ClassDescriptor)it_sclasses.next();
+	if(!outputs.contains(t_cd)) {
+	    tooutput.clear();
+	    tooutput.add(t_cd);
+	    toprocess.clear();
+	    toprocess.add(t_cd);
+	    while(!toprocess.isEmpty()) {
+		ClassDescriptor pcd = toprocess.poll();
+		// check super interfaces
+		Iterator it_sinterfaces = pcd.getSuperInterfaces();
+		while(it_sinterfaces.hasNext()) {
+		    ClassDescriptor sint = (ClassDescriptor)it_sinterfaces.next();
+		    if(!outputs.contains(sint)) {
+			toprocess.add(sint);
+			if(sctbl.contains(sint.getClassName())) {
+			    tooutput.add(sint);
+			}
+		    }
+		}
+		// check super classes
+		ClassDescriptor supercd = pcd.getSuperDesc();
+		if(supercd!=null && !outputs.contains(supercd)) {
+		    toprocess.add(supercd);
+		    if(sctbl.contains(supercd.getClassName())) {
+			tooutput.add(supercd);
+		    }
+		}
+	    }
+	    
+	    for(int i = tooutput.size()-1; i>=0; i--) {
+		ClassDescriptor output = tooutput.elementAt(i);
+		MethodDescriptor t_md = (MethodDescriptor)output.getMethodTable().get("staticblocks");
+
+		if(t_md != null&&callgraph.isInit(output)) {
+		    outmethod.println("   {");
+		    if ((GENERATEPRECISEGC) || state.MULTICOREGC||state.PMC) {
+			outmethod.print("       struct "+output.getSafeSymbol()+t_md.getSafeSymbol()+"_"+t_md.getSafeMethodDescriptor()+"_params __parameterlist__={");
+			outmethod.println("0, NULL};");
+			outmethod.println("     "+output.getSafeSymbol()+t_md.getSafeSymbol()+"_"+t_md.getSafeMethodDescriptor()+"(& __parameterlist__);");
+		    } else {
+			outmethod.println("     "+output.getSafeSymbol()+t_md.getSafeSymbol()+"_"+t_md.getSafeMethodDescriptor()+"();");
+		    }
+		    outmethod.println("   }");
+		}
+		outputs.add(output);
+	    }
+	}
     }
   }
 
@@ -318,18 +389,25 @@ public class BuildCode {
    * getClass() method.
    * */
   protected void outputClassObjects(PrintWriter outmethod) {
-    // for each class, initialize its Class object
-    SymbolTable ctbl = this.state.getClassSymbolTable();
-    for(Iterator it_classes = ctbl.getDescriptorsIterator();it_classes.hasNext();) {
-      ClassDescriptor t_cd = (ClassDescriptor)it_classes.next();
-      outmethod.println(" {");
-      if ((GENERATEPRECISEGC) || (this.state.MULTICOREGC)) {
-	outmethod.println("    struct garbagelist dummy={0,NULL};");
-	outmethod.println("    global_defs_p->"+t_cd.getSafeSymbol()+"classobj = allocate_new(&dummy, " + typeutil.getClass(TypeUtil.ObjectClass).getId() + ");");
-      } else 
-	outmethod.println("    global_defs_p->"+t_cd.getSafeSymbol()+"classobj = allocate_new("+typeutil.getClass(TypeUtil.ObjectClass).getId() + ");");
-      outmethod.println(" }");
+    // create a global classobj array
+    outmethod.println(" {");
+    outmethod.println("    int i = 0;");
+    if ((GENERATEPRECISEGC) || state.MULTICOREGC||state.PMC) {
+      outmethod.println("    struct garbagelist dummy={0,NULL};");
+      outmethod.println("    global_defs_p->classobjs = allocate_newarray(&dummy, OBJECTARRAYTYPE, "
+                        + (state.numClasses()+state.numArrays()+state.numInterfaces()) + ");");
+    } else {
+      outmethod.println("    global_defs_p->classobjs = allocate_newarray(OBJECTARRAYTYPE, "
+                        + (state.numClasses()+state.numArrays()+state.numInterfaces()) + ");");
+    }
+    outmethod.println("    for(i = 0; i < " + (state.numClasses()+state.numArrays()+state.numInterfaces()) + "; i++) {");
+    if ((GENERATEPRECISEGC) || state.MULTICOREGC||state.PMC) {
+      outmethod.println("        ((void **)(((char *) &(global_defs_p->classobjs->___length___))+sizeof(int)))[i] = allocate_new(NULL, " +typeutil.getClass(TypeUtil.ObjectClass).getId() + ");");
+    } else {
+      outmethod.println("        ((void **)(((char *) &(global_defs_p->classobjs->___length___))+sizeof(int)))[i] = allocate_new(" +typeutil.getClass(TypeUtil.ObjectClass).getId() + ");");
     }
+    outmethod.println("    }");
+    outmethod.println(" }");
   }
 
   /* This code just generates the main C method for java programs.
@@ -339,6 +417,9 @@ public class BuildCode {
   protected void outputMainMethod(PrintWriter outmethod) {
     outmethod.println("int main(int argc, const char *argv[]) {");
     outmethod.println("  int i;");
+    if (state.THREAD) {
+      outmethod.println("initializethreads();");
+    }
     outmethod.println("  global_defs_p=calloc(1, sizeof(struct global_defs_t));");
     outmethod.println("  global_defsprim_p=calloc(1, sizeof(struct global_defsprim_t));");
     if (GENERATEPRECISEGC) {
@@ -352,12 +433,12 @@ public class BuildCode {
 
 
     additionalCodeAtTopOfMain(outmethod);
-
-    if (state.THREAD) {
-      outmethod.println("initializethreads();");
+    for(BuildCodeExtension bcx: extensions) {
+      bcx.additionalCodeAtTopOfMain(outmethod);
     }
 
-    if ((GENERATEPRECISEGC) || (this.state.MULTICOREGC)) {
+
+    if ((GENERATEPRECISEGC) || state.MULTICOREGC||state.PMC) {
       outmethod.println("  struct ArrayObject * stringarray=allocate_newarray(NULL, STRINGARRAYTYPE, argc-1);");
     } else {
       outmethod.println("  struct ArrayObject * stringarray=allocate_newarray(STRINGARRAYTYPE, argc-1);");
@@ -365,19 +446,29 @@ public class BuildCode {
     outmethod.println("  for(i=1;i<argc;i++) {");
     outmethod.println("    int length=strlen(argv[i]);");
 
-    if ((GENERATEPRECISEGC) || (this.state.MULTICOREGC)) {
-      outmethod.println("    struct ___String___ *newstring=NewString(NULL, argv[i], length);");
+    ClassDescriptor stringclass=typeutil.getClass(TypeUtil.StringClass);
+    String stringclassstring="struct "+stringclass.getSafeSymbol();
+
+    if ((GENERATEPRECISEGC) || state.MULTICOREGC||state.PMC) {
+      outmethod.println("    "+stringclassstring+" *newstring=NewString(NULL, argv[i], length);");
     } else {
-      outmethod.println("    struct ___String___ *newstring=NewString(argv[i], length);");
+      outmethod.println("    "+stringclassstring+" *newstring=NewString(argv[i], length);");
     }
     outmethod.println("    ((void **)(((char *)& stringarray->___length___)+sizeof(int)))[i-1]=newstring;");
     outmethod.println("  }");
 
+
+    additionalCodeForCommandLineArgs(outmethod, "stringarray");
+    for(BuildCodeExtension bcx: extensions) {
+      bcx.additionalCodeForCommandLineArgs(outmethod, "stringarray");
+    }
+
+
     MethodDescriptor md=typeutil.getMain();
     ClassDescriptor cd=typeutil.getMainClass();
 
     outmethod.println("   {");
-    if ((GENERATEPRECISEGC) || (this.state.MULTICOREGC)) {
+    if ((GENERATEPRECISEGC) || state.MULTICOREGC||state.PMC) {
       outmethod.print("       struct "+cd.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params __parameterlist__={");
       outmethod.println("1, NULL,"+"stringarray};");
       outmethod.println("     "+cd.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(& __parameterlist__);");
@@ -402,6 +493,10 @@ public class BuildCode {
 
 
     additionalCodeAtBottomOfMain(outmethod);
+    for(BuildCodeExtension bcx: extensions) {
+      bcx.additionalCodeAtBottomOfMain(outmethod);
+    }
+
 
     outmethod.println("}");
   }
@@ -428,9 +523,9 @@ public class BuildCode {
     while(taskit.hasNext()) {
       TaskDescriptor td=(TaskDescriptor)taskit.next();
       if (first)
-	first=false;
+        first=false;
       else
-	outtaskdefs.println(",");
+        outtaskdefs.println(",");
       outtaskdefs.print("&task_"+td.getSafeSymbol());
     }
     outtaskdefs.println("};");
@@ -447,19 +542,22 @@ public class BuildCode {
     outmethod.println("#include \"methodheaders.h\"");
     outmethod.println("#include \"virtualtable.h\"");
     outmethod.println("#include \"runtime.h\"");
+    if (state.JNI) {
+      outmethod.println("#include \"jni-private.h\"");
+    }
 
     // always include: compiler directives will leave out
     // instrumentation when option is not set
-	if(!state.MULTICORE) {
-    outmethod.println("#include \"coreprof/coreprof.h\"");
-	}
+    if(!state.MULTICORE) {
+      outmethod.println("#include \"coreprof/coreprof.h\"");
+    }
 
     if (state.FASTCHECK) {
       outmethod.println("#include \"localobjects.h\"");
     }
     if(state.MULTICORE) {
       if(state.TASK) {
-	outmethod.println("#include \"task.h\"");
+        outmethod.println("#include \"task.h\"");
       }
       outmethod.println("#include \"multicoreruntime.h\"");
       outmethod.println("#include \"runtime_arch.h\"");
@@ -473,12 +571,17 @@ public class BuildCode {
     if (state.main!=null) {
       outmethod.println("#include <string.h>");
     }
+    if (state.SSJAVA_GENCODE_PREVENT_CRASHES){
+      outmethod.println("#include <stdio.h>");
+    }
     if (state.CONSCHECK) {
       outmethod.println("#include \"checkers.h\"");
     }
 
-
     additionalIncludesMethodsImplementation(outmethod);
+    for(BuildCodeExtension bcx: extensions) {
+      bcx.additionalIncludesMethodsImplementation(outmethod);
+    }
 
     outmethod.println("struct global_defs_t * global_defs_p;");
     outmethod.println("struct global_defsprim_t * global_defsprim_p;");
@@ -493,6 +596,10 @@ public class BuildCode {
 
 
     additionalCodeAtTopMethodsImplementation(outmethod);
+    for(BuildCodeExtension bcx: extensions) {
+      bcx.additionalCodeAtTopMethodsImplementation(outmethod);
+    }
+
 
     generateMethods(outmethod);
   }
@@ -504,23 +611,25 @@ public class BuildCode {
       ClassDescriptor cn=(ClassDescriptor)classit.next();
       Iterator methodit=cn.getMethods();
       while(methodit.hasNext()) {
-	/* Classify parameters */
-	MethodDescriptor md=(MethodDescriptor)methodit.next();
-	if (!callgraph.isCallable(md)) {
-	  continue;
-	}
+        /* Classify parameters */
+        MethodDescriptor md=(MethodDescriptor)methodit.next();
+        if (!callgraph.isCallable(md)&&(!md.isStaticBlock()||!callgraph.isInit(cn))) {
+          continue;
+        }
 
-	FlatMethod fm=state.getMethodFlat(md);
-	if (!md.getModifiers().isNative()) {
-	  generateFlatMethod(fm, outmethod);
-	}
+        FlatMethod fm=state.getMethodFlat(md);
+        if (!md.getModifiers().isNative()) {
+          generateFlatMethod(fm, outmethod);
+        } else if (state.JNI) {
+          generateNativeFlatMethod(fm, outmethod);
+        }
       }
     }
   }
 
   protected void outputStructs(PrintWriter outstructs) {
-    outstructs.println("#ifndef STRUCTDEFS_H");
-    outstructs.println("#define STRUCTDEFS_H");
+    outstructs.println("#ifndef __STRUCTDEFS_H__");
+    outstructs.println("#define __STRUCTDEFS_H__");
     outstructs.println("#include \"classdefs.h\"");
     outstructs.println("#ifndef INTPTR");
     outstructs.println("#ifdef BIT64");
@@ -532,6 +641,9 @@ public class BuildCode {
 
 
     additionalIncludesStructsHeader(outstructs);
+    for(BuildCodeExtension bcx: extensions) {
+      bcx.additionalIncludesStructsHeader(outstructs);
+    }
 
 
     /* Output #defines that the runtime uses to determine type
@@ -589,30 +701,30 @@ public class BuildCode {
       outclassdefs.println("struct "+cn.getSafeSymbol()+";");
 
       if((cn.getNumStaticFields() != 0) || (cn.getNumStaticBlocks() != 0)) {
-	// this class has static fields/blocks, need to add a global flag to
-	// indicate if its static fields have been initialized and/or if its
-	// static blocks have been executed
-	outglobaldefsprim.println("  int "+cn.getSafeSymbol()+"static_block_exe_flag;");
+        // this class has static fields/blocks, need to add a global flag to
+        // indicate if its static fields have been initialized and/or if its
+        // static blocks have been executed
+        outglobaldefsprim.println("  int "+cn.getSafeSymbol()+"static_block_exe_flag;");
       }
-      
-      // for each class, create a global object
-      outglobaldefs.println("  struct ___Object___ *"+cn.getSafeSymbol()+"classobj;");
-      globaldefscount++;
     }
     outclassdefs.println("");
     //Print out definition for array type
     outclassdefs.println("struct "+arraytype+" {");
     outclassdefs.println("  int type;");
+    outclassdefs.println("  int hashcode;");
 
 
     additionalClassObjectFields(outclassdefs);
+    for(BuildCodeExtension bcx: extensions) {
+      bcx.additionalClassObjectFields(outclassdefs);
+    }
 
 
     if (state.EVENTMONITOR) {
       outclassdefs.println("  int objuid;");
     }
     if (state.THREAD) {
-      outclassdefs.println("  pthread_t tid;");
+      outclassdefs.println("  volatile int tid;");
       outclassdefs.println("  volatile int notifycount;");
     }
     if(state.MGC) {
@@ -620,32 +732,45 @@ public class BuildCode {
       outclassdefs.println("  volatile int notifycount;");
       outclassdefs.println("  volatile int objlock;");
       if(state.MULTICOREGC) {
-	outclassdefs.println("  int marked;");
+        //outclassdefs.println("  int marked;");
+      }
+      if(state.PMC) {
+        outclassdefs.println("  int marked;");
+	outclassdefs.println("  void * backward;");
       }
     }
     if (state.TASK) {
       outclassdefs.println("  int flag;");
+      outclassdefs.println("  int ___cachedCode___;");
       if(!state.MULTICORE) {
-	outclassdefs.println("  void * flagptr;");
+        outclassdefs.println("  void * flagptr;");
       } else {
-	outclassdefs.println("  int version;");
-	outclassdefs.println("  int * lock;");  // lock entry for this obj
-	outclassdefs.println("  int mutex;");
-	outclassdefs.println("  volatile int lockcount;");
-	outclassdefs.println("  volatile int notifycount;");
-	if(state.MULTICOREGC) {
+        outclassdefs.println("  int version;");
+        outclassdefs.println("  int * lock;");  // lock entry for this obj
+        outclassdefs.println("  int mutex;");
+        outclassdefs.println("  volatile int lockcount;");
+        if(state.MULTICOREGC) {
+          //outclassdefs.println("  int marked;");
+        }
+	if(state.PMC) {
 	  outclassdefs.println("  int marked;");
+	  outclassdefs.println("  void * backward;");
 	}
       }
       if(state.OPTIONAL) {
-	outclassdefs.println("  int numfses;");
-	outclassdefs.println("  int * fses;");
+        outclassdefs.println("  int numfses;");
+        outclassdefs.println("  int * fses;");
       }
     }
 
     printClassStruct(typeutil.getClass(TypeUtil.ObjectClass), outclassdefs, outglobaldefs, outglobaldefsprim);
     printedfieldstbl.clear();
+
     printExtraArrayFields(outclassdefs);
+    for(BuildCodeExtension bcx: extensions) {
+      bcx.printExtraArrayFields(outclassdefs);
+    }
+
     if (state.ARRAYPAD) {
       outclassdefs.println("  int paddingforarray;");
     }
@@ -695,10 +820,10 @@ public class BuildCode {
       outrepairstructs.println("structure "+cn.getSymbol()+" {");
       outrepairstructs.println("  int __type__;");
       if (state.TASK) {
-	outrepairstructs.println("  int __flag__;");
-	if(!state.MULTICORE) {
-	  outrepairstructs.println("  int __flagptr__;");
-	}
+        outrepairstructs.println("  int __flag__;");
+        if(!state.MULTICORE) {
+          outrepairstructs.println("  int __flagptr__;");
+        }
       }
       printRepairStruct(cn, outrepairstructs);
       outrepairstructs.println("}\n");
@@ -725,13 +850,13 @@ public class BuildCode {
     for(int i=0; i<fields.size(); i++) {
       FieldDescriptor fd=(FieldDescriptor)fields.get(i);
       if (fd.getType().isArray()) {
-	output.println("  "+arraytype+"_"+ state.getArrayNumber(fd.getType()) +" * "+fd.getSymbol()+";");
+        output.println("  "+arraytype+"_"+ state.getArrayNumber(fd.getType()) +" * "+fd.getSymbol()+";");
       } else if (fd.getType().isClass())
-	output.println("  "+fd.getType().getRepairSymbol()+" * "+fd.getSymbol()+";");
+        output.println("  "+fd.getType().getRepairSymbol()+" * "+fd.getSymbol()+";");
       else if (fd.getType().isFloat())
-	output.println("  int "+fd.getSymbol()+"; /* really float */");
+        output.println("  int "+fd.getSymbol()+"; /* really float */");
       else
-	output.println("  "+fd.getType().getRepairSymbol()+" "+fd.getSymbol()+";");
+        output.println("  "+fd.getType().getRepairSymbol()+" "+fd.getSymbol()+";");
     }
   }
 
@@ -745,48 +870,48 @@ public class BuildCode {
 
       int dnfterms;
       if (param_flag==null) {
-	output.println("int parameterdnf_"+i+"_"+task.getSafeSymbol()+"[]={");
-	output.println("0x0, 0x0 };");
-	dnfterms=1;
+        output.println("int parameterdnf_"+i+"_"+task.getSafeSymbol()+"[]={");
+        output.println("0x0, 0x0 };");
+        dnfterms=1;
       } else {
-	DNFFlag dflag=param_flag.getDNF();
-	dnfterms=dflag.size();
-
-	Hashtable flags=(Hashtable)flagorder.get(param_type.getClassDesc());
-	output.println("int parameterdnf_"+i+"_"+task.getSafeSymbol()+"[]={");
-	for(int j=0; j<dflag.size(); j++) {
-	  if (j!=0)
-	    output.println(",");
-	  Vector term=dflag.get(j);
-	  int andmask=0;
-	  int checkmask=0;
-	  for(int k=0; k<term.size(); k++) {
-	    DNFFlagAtom dfa=(DNFFlagAtom)term.get(k);
-	    FlagDescriptor fd=dfa.getFlag();
-	    boolean negated=dfa.getNegated();
-	    int flagid=1<<((Integer)flags.get(fd)).intValue();
-	    andmask|=flagid;
-	    if (!negated)
-	      checkmask|=flagid;
-	  }
-	  output.print("0x"+Integer.toHexString(andmask)+", 0x"+Integer.toHexString(checkmask));
-	}
-	output.println("};");
+        DNFFlag dflag=param_flag.getDNF();
+        dnfterms=dflag.size();
+
+        Hashtable flags=(Hashtable)flagorder.get(param_type.getClassDesc());
+        output.println("int parameterdnf_"+i+"_"+task.getSafeSymbol()+"[]={");
+        for(int j=0; j<dflag.size(); j++) {
+          if (j!=0)
+            output.println(",");
+          Vector term=dflag.get(j);
+          int andmask=0;
+          int checkmask=0;
+          for(int k=0; k<term.size(); k++) {
+            DNFFlagAtom dfa=(DNFFlagAtom)term.get(k);
+            FlagDescriptor fd=dfa.getFlag();
+            boolean negated=dfa.getNegated();
+            int flagid=1<<((Integer)flags.get(fd)).intValue();
+            andmask|=flagid;
+            if (!negated)
+              checkmask|=flagid;
+          }
+          output.print("0x"+Integer.toHexString(andmask)+", 0x"+Integer.toHexString(checkmask));
+        }
+        output.println("};");
       }
 
       output.println("int parametertag_"+i+"_"+task.getSafeSymbol()+"[]={");
       if (param_tag!=null)
-	for(int j=0; j<param_tag.numTags(); j++) {
-	  if (j!=0)
-	    output.println(",");
-	  /* for each tag we need */
-	  /* which slot it is */
-	  /* what type it is */
-	  TagVarDescriptor tvd=(TagVarDescriptor)task.getParameterTable().get(param_tag.getName(j));
-	  TempDescriptor tmp=param_tag.getTemp(j);
-	  int slot=fm.getTagInt(tmp);
-	  output.println(slot+", "+state.getTagId(tvd.getTag()));
-	}
+        for(int j=0; j<param_tag.numTags(); j++) {
+          if (j!=0)
+            output.println(",");
+          /* for each tag we need */
+          /* which slot it is */
+          /* what type it is */
+          TagVarDescriptor tvd=(TagVarDescriptor)task.getParameterTable().get(param_tag.getName(j));
+          TempDescriptor tmp=param_tag.getTemp(j);
+          int slot=fm.getTagInt(tmp);
+          output.println(slot+", "+state.getTagId(tvd.getTag()));
+        }
       output.println("};");
 
       output.println("struct parameterdescriptor parameter_"+i+"_"+task.getSafeSymbol()+"={");
@@ -795,9 +920,9 @@ public class BuildCode {
       output.println("parameterdnf_"+i+"_"+task.getSafeSymbol()+",");
       output.println("0,");
       if (param_tag!=null)
-	output.println("/* number of tags */"+param_tag.numTags()+",");
+        output.println("/* number of tags */"+param_tag.numTags()+",");
       else
-	output.println("/* number of tags */ 0,");
+        output.println("/* number of tags */ 0,");
       output.println("parametertag_"+i+"_"+task.getSafeSymbol());
       output.println("};");
     }
@@ -806,7 +931,7 @@ public class BuildCode {
     output.println("struct parameterdescriptor * parameterdescriptors_"+task.getSafeSymbol()+"[] = {");
     for (int i=0; i<task.numParameters(); i++) {
       if (i!=0)
-	output.println(",");
+        output.println(",");
       output.print("&parameter_"+i+"_"+task.getSafeSymbol());
     }
     output.println("};");
@@ -830,7 +955,7 @@ public class BuildCode {
     while(classit.hasNext()) {
       ClassDescriptor cd=(ClassDescriptor)classit.next();
       if (virtualcalls.getMethodCount(cd)>maxcount)
-	maxcount=virtualcalls.getMethodCount(cd);
+        maxcount=virtualcalls.getMethodCount(cd);
     }
     MethodDescriptor[][] virtualtable=null;
     virtualtable=new MethodDescriptor[state.numClasses()+state.numArrays()][maxcount];
@@ -841,7 +966,7 @@ public class BuildCode {
       ClassDescriptor cd=(ClassDescriptor)classit.next();
       if(cd.isInterface()) {
         continue;
-      }        
+      }
       fillinRow(cd, virtualtable, cd.getId());
     }
 
@@ -857,15 +982,15 @@ public class BuildCode {
     boolean needcomma=false;
     for(int i=0; i<state.numClasses()+state.numArrays(); i++) {
       for(int j=0; j<maxcount; j++) {
-	if (needcomma)
-	  outvirtual.print(", ");
-	if (virtualtable[i][j]!=null) {
-	  MethodDescriptor md=virtualtable[i][j];
-	  outvirtual.print("& "+md.getClassDesc().getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor());
-	} else {
-	  outvirtual.print("0");
-	}
-	needcomma=true;
+        if (needcomma)
+          outvirtual.print(", ");
+        if (virtualtable[i][j]!=null) {
+          MethodDescriptor md=virtualtable[i][j];
+          outvirtual.print("& "+md.getClassDesc().getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor());
+        } else {
+          outvirtual.print("0");
+        }
+        needcomma=true;
       }
       outvirtual.println("");
     }
@@ -886,10 +1011,10 @@ public class BuildCode {
     for(Iterator it=cd.getMethods(); it.hasNext(); ) {
       MethodDescriptor md=(MethodDescriptor)it.next();
       if (md.isStatic()||md.getReturnType()==null)
-	continue;
+        continue;
 
       if (!callgraph.isCallable(md)) {
-	continue;
+        continue;
       }
 
       int methodnum = virtualcalls.getMethodNumber(md);
@@ -903,13 +1028,17 @@ public class BuildCode {
 
   protected void generateSizeArray(PrintWriter outclassdefs) {
     outclassdefs.print("extern struct prefetchCountStats * evalPrefetch;\n");
+
     generateSizeArrayExtensions(outclassdefs);
+    for(BuildCodeExtension bcx: extensions) {
+      bcx.generateSizeArrayExtensions(outclassdefs);
+    }
 
     Iterator it=state.getClassSymbolTable().getDescriptorsIterator();
     cdarray=new ClassDescriptor[state.numClasses()];
     ifarray = new ClassDescriptor[state.numInterfaces()];
     cdarray[0] = null;
-    int interfaceid = 0;
+
     while(it.hasNext()) {
       ClassDescriptor cd=(ClassDescriptor)it.next();
       if(cd.isInterface()) {
@@ -933,9 +1062,9 @@ public class BuildCode {
     for(int i=0; i<state.numClasses(); i++) {
       ClassDescriptor cd=cdarray[i];
       if(cd == null) {
-	outclassdefs.println("NULL " + i);
+        outclassdefs.println("NULL " + i);
       } else {
-	outclassdefs.println(cd +"  "+i);
+        outclassdefs.println(cd +"  "+i);
       }
     }
 
@@ -943,7 +1072,7 @@ public class BuildCode {
       TypeDescriptor arraytd=arraytable[i];
       outclassdefs.println(arraytd.toPrettyString() +"  "+(i+state.numClasses()));
     }
-    
+
     for(int i=0; i<state.numInterfaces(); i++) {
       ClassDescriptor ifcd = ifarray[i];
       outclassdefs.println(ifcd +"  "+(i+state.numClasses()+state.numArrays()));
@@ -957,11 +1086,11 @@ public class BuildCode {
     boolean needcomma=false;
     for(int i=0; i<state.numClasses(); i++) {
       if (needcomma)
-	outclassdefs.print(", ");
+        outclassdefs.print(", ");
       if(i>0) {
-	outclassdefs.print("sizeof(struct "+cdarray[i].getSafeSymbol()+")");
+        outclassdefs.print("sizeof(struct "+cdarray[i].getSafeSymbol()+")");
       } else {
-	outclassdefs.print("0");
+        outclassdefs.print("0");
       }
       needcomma=true;
     }
@@ -969,15 +1098,15 @@ public class BuildCode {
 
     for(int i=0; i<state.numArrays(); i++) {
       if (needcomma)
-	outclassdefs.print(", ");
+        outclassdefs.print(", ");
       TypeDescriptor tdelement=arraytable[i].dereference();
       if (tdelement.isArray()||tdelement.isClass()||tdelement.isNull())
-	outclassdefs.print("sizeof(void *)");
+        outclassdefs.print("sizeof(void *)");
       else
-	outclassdefs.print("sizeof("+tdelement.getSafeSymbol()+")");
+        outclassdefs.print("sizeof("+tdelement.getSafeSymbol()+")");
       needcomma=true;
     }
-    
+
     for(int i=0; i<state.numInterfaces(); i++) {
       if (needcomma)
         outclassdefs.print(", ");
@@ -992,16 +1121,16 @@ public class BuildCode {
     outclassdefs.print("int typearray[]={");
     for(int i=0; i<state.numClasses(); i++) {
       ClassDescriptor cd=cdarray[i];
-      ClassDescriptor supercd=i>0 ? cd.getSuperDesc() : null;
+      ClassDescriptor supercd=i>0?cd.getSuperDesc():null;
       if(supercd != null && supercd.isInterface()) {
         throw new Error("Super class can not be interfaces");
       }
       if (needcomma)
-	outclassdefs.print(", ");
+        outclassdefs.print(", ");
       if (supercd==null)
-	outclassdefs.print("-1");
+        outclassdefs.print("-1");
       else
-	outclassdefs.print(supercd.getId());
+        outclassdefs.print(supercd.getId());
       needcomma=true;
     }
 
@@ -1009,30 +1138,30 @@ public class BuildCode {
       TypeDescriptor arraytd=arraytable[i];
       ClassDescriptor arraycd=arraytd.getClassDesc();
       if (arraycd==null) {
-	if (needcomma)
-	  outclassdefs.print(", ");
-	outclassdefs.print(objectclass.getId());
-	needcomma=true;
-	continue;
+        if (needcomma)
+          outclassdefs.print(", ");
+        outclassdefs.print(objectclass.getId());
+        needcomma=true;
+        continue;
       }
       ClassDescriptor cd=arraycd.getSuperDesc();
       int type=-1;
       while(cd!=null) {
-	TypeDescriptor supertd=new TypeDescriptor(cd);
-	supertd.setArrayCount(arraytd.getArrayCount());
-	type=state.getArrayNumber(supertd);
-	if (type!=-1) {
-	  type+=state.numClasses();
-	  break;
-	}
-	cd=cd.getSuperDesc();
+        TypeDescriptor supertd=new TypeDescriptor(cd);
+        supertd.setArrayCount(arraytd.getArrayCount());
+        type=state.getArrayNumber(supertd);
+        if (type!=-1) {
+          type+=state.numClasses();
+          break;
+        }
+        cd=cd.getSuperDesc();
       }
       if (needcomma)
-	outclassdefs.print(", ");
+        outclassdefs.print(", ");
       outclassdefs.print(type);
       needcomma=true;
     }
-    
+
     for(int i=0; i<state.numInterfaces(); i++) {
       ClassDescriptor cd=ifarray[i];
       ClassDescriptor supercd=cd.getSuperDesc();
@@ -1040,11 +1169,11 @@ public class BuildCode {
         throw new Error("Super class can not be interfaces");
       }
       if (needcomma)
-    outclassdefs.print(", ");
+        outclassdefs.print(", ");
       if (supercd==null)
-    outclassdefs.print("-1");
+        outclassdefs.print("-1");
       else
-    outclassdefs.print(supercd.getId());
+        outclassdefs.print(supercd.getId());
       needcomma=true;
     }
 
@@ -1058,26 +1187,26 @@ public class BuildCode {
       TypeDescriptor arraytd=arraytable[i];
       ClassDescriptor arraycd=arraytd.getClassDesc();
       if (arraycd==null) {
-	if (needcomma)
-	  outclassdefs.print(", ");
-	outclassdefs.print("-1");
-	needcomma=true;
-	continue;
+        if (needcomma)
+          outclassdefs.print(", ");
+        outclassdefs.print("-1");
+        needcomma=true;
+        continue;
       }
       ClassDescriptor cd=arraycd.getSuperDesc();
       int level=arraytd.getArrayCount()-1;
       int type=-1;
       for(; level>0; level--) {
-	TypeDescriptor supertd=new TypeDescriptor(objectclass);
-	supertd.setArrayCount(level);
-	type=state.getArrayNumber(supertd);
-	if (type!=-1) {
-	  type+=state.numClasses();
-	  break;
-	}
+        TypeDescriptor supertd=new TypeDescriptor(objectclass);
+        supertd.setArrayCount(level);
+        type=state.getArrayNumber(supertd);
+        if (type!=-1) {
+          type+=state.numClasses();
+          break;
+        }
       }
       if (needcomma)
-	outclassdefs.print(", ");
+        outclassdefs.print(", ");
       outclassdefs.print(type);
       needcomma=true;
     }
@@ -1092,7 +1221,7 @@ public class BuildCode {
   protected void generateTempStructs(FlatMethod fm) {
     MethodDescriptor md=fm.getMethod();
     TaskDescriptor task=fm.getTask();
-    ParamsObject objectparams=md!=null ? new ParamsObject(md,tag++) : new ParamsObject(task, tag++);
+    ParamsObject objectparams=md!=null?new ParamsObject(md,tag++):new ParamsObject(task, tag++);
     if (md!=null)
       paramstable.put(md, objectparams);
     else
@@ -1101,21 +1230,21 @@ public class BuildCode {
     for(int i=0; i<fm.numParameters(); i++) {
       TempDescriptor temp=fm.getParameter(i);
       TypeDescriptor type=temp.getType();
-      if (type.isPtr()&&((GENERATEPRECISEGC) || (this.state.MULTICOREGC)))
-	objectparams.addPtr(temp);
+      if (type.isPtr()&&((GENERATEPRECISEGC) || state.MULTICOREGC||state.PMC))
+        objectparams.addPtr(temp);
       else
-	objectparams.addPrim(temp);
+        objectparams.addPrim(temp);
     }
 
     for(int i=0; i<fm.numTags(); i++) {
       TempDescriptor temp=fm.getTag(i);
-      if ((GENERATEPRECISEGC) || (this.state.MULTICOREGC))
-	objectparams.addPtr(temp);
+      if ((GENERATEPRECISEGC) || state.MULTICOREGC||state.PMC)
+        objectparams.addPtr(temp);
       else
-	objectparams.addPrim(temp);
+        objectparams.addPrim(temp);
     }
 
-    TempObject objecttemps=md!=null ? new TempObject(objectparams,md,tag++) : new TempObject(objectparams, task, tag++);
+    TempObject objecttemps=md!=null?new TempObject(objectparams,md,tag++):new TempObject(objectparams, task, tag++);
     if (md!=null)
       tempstable.put(md, objecttemps);
     else
@@ -1125,12 +1254,12 @@ public class BuildCode {
       FlatNode fn=(FlatNode)nodeit.next();
       TempDescriptor[] writes=fn.writesTemps();
       for(int i=0; i<writes.length; i++) {
-	TempDescriptor temp=writes[i];
-	TypeDescriptor type=temp.getType();
-	if (type.isPtr()&&((GENERATEPRECISEGC) || (this.state.MULTICOREGC)))
-	  objecttemps.addPtr(temp);
-	else
-	  objecttemps.addPrim(temp);
+        TempDescriptor temp=writes[i];
+        TypeDescriptor type=temp.getType();
+        if (type.isPtr()&&((GENERATEPRECISEGC) || state.MULTICOREGC||state.PMC))
+          objecttemps.addPtr(temp);
+        else
+          objecttemps.addPrim(temp);
       }
     }
   }
@@ -1146,57 +1275,69 @@ public class BuildCode {
     Iterator it=state.getClassSymbolTable().getDescriptorsIterator();
     while(it.hasNext()) {
       ClassDescriptor cn=(ClassDescriptor)it.next();
-      output.println("unsigned INTPTR "+cn.getSafeSymbol()+"_pointers[]={");
-      Iterator allit=cn.getFieldTable().getAllDescriptorsIterator();
+      output.print("unsigned INTPTR "+cn.getSafeSymbol()+"_pointers[]={");
+      if (javabuilder!=null&&!javabuilder.hasLayout(cn)) {
+        output.println("0};");
+        continue;
+      }
+
       int count=0;
-      while(allit.hasNext()) {
-	FieldDescriptor fd=(FieldDescriptor)allit.next();
-    if(fd.isStatic()) {
-      continue;
-    }
-	TypeDescriptor type=fd.getType();
-	if (type.isPtr())
-	  count++;
+      for(Iterator allit=cn.getFieldTable().getAllDescriptorsIterator(); allit.hasNext(); ) {
+        FieldDescriptor fd=(FieldDescriptor)allit.next();
+        if(fd.isStatic()) {
+          continue;
+        }
+        TypeDescriptor type=fd.getType();
+        if (type.isPtr())
+          count++;
+      }
+      if(state.TASK) {
+        // the lock field is also a pointer
+        count++;
       }
       output.print(count);
-      allit=cn.getFieldTable().getAllDescriptorsIterator();
-      while(allit.hasNext()) {
-	FieldDescriptor fd=(FieldDescriptor)allit.next();
-    if(fd.isStatic()) {
-      continue;
-    }
-	TypeDescriptor type=fd.getType();
-	if (type.isPtr()) {
-	  output.println(",");
-	  output.print("((unsigned INTPTR)&(((struct "+cn.getSafeSymbol() +" *)0)->"+
-	               fd.getSafeSymbol()+"))");
-	}
+      for(Iterator allit=cn.getFieldTable().getAllDescriptorsIterator(); allit.hasNext(); ) {
+        FieldDescriptor fd=(FieldDescriptor)allit.next();
+        if(fd.isStatic()) {
+          continue;
+        }
+        TypeDescriptor type=fd.getType();
+        if (type.isPtr()) {
+          output.print(", ");
+          output.print("((unsigned INTPTR)&(((struct "+cn.getSafeSymbol() +" *)0)->"+
+                       fd.getSafeSymbol()+"))");
+        }
+      }
+      if(state.TASK) {
+        // output the lock field
+        output.print(", ");
+        output.print("((unsigned INTPTR)&(((struct "+cn.getSafeSymbol() +" *)0)->lock))");
       }
       output.println("};");
     }
-    
+
     output.println("unsigned INTPTR * pointerarray[]={");
     boolean needcomma=false;
     for(int i=0; i<state.numClasses(); i++) {
       ClassDescriptor cn=cdarray[i];
       if (needcomma)
-	output.println(",");
+        output.println(",");
       needcomma=true;
       if(cn != null) {
-	output.print(cn.getSafeSymbol()+"_pointers");
+        output.print(cn.getSafeSymbol()+"_pointers");
       } else {
-	output.print("NULL");
+        output.print("NULL");
       }
     }
 
     for(int i=0; i<state.numArrays(); i++) {
       if (needcomma)
-	output.println(", ");
+        output.println(", ");
       TypeDescriptor tdelement=arraytable[i].dereference();
       if (tdelement.isArray()||tdelement.isClass())
-	output.print("((unsigned INTPTR *)1)");
+        output.print("((unsigned INTPTR *)1)");
       else
-	output.print("0");
+        output.print("0");
       needcomma=true;
     }
 
@@ -1206,26 +1347,26 @@ public class BuildCode {
     for(int i=0; i<state.numClasses(); i++) {
       ClassDescriptor cn=cdarray[i];
       if (needcomma)
-	output.println(", ");
+        output.println(", ");
       needcomma=true;
       if ((cn != null) && (cn.hasFlags()))
-	output.print("1");
+        output.print("1");
       else
-	output.print("0");
+        output.print("0");
     }
     output.println("};");
   }
-  
+
   private int checkarraysupertype(ClassDescriptor arraycd, TypeDescriptor arraytd) {
     int type=-1;
-    
+
     TypeDescriptor supertd=new TypeDescriptor(arraycd);
     supertd.setArrayCount(arraytd.getArrayCount());
     type=state.getArrayNumber(supertd);
     if (type!=-1) {
       return type;
     }
-    
+
     ClassDescriptor cd = arraycd.getSuperDesc();
     if(cd != null) {
       type = checkarraysupertype(cd, arraytd);
@@ -1242,7 +1383,7 @@ public class BuildCode {
         return type;
       }
     }
-    
+
     return type;
   }
 
@@ -1261,7 +1402,7 @@ public class BuildCode {
       if((cn != null) && (cn.getSuperDesc() != null)) {
         snum++;
       }
-      Iterator it_sifs = cn != null? cn.getSuperInterfaces() : null;
+      Iterator it_sifs = cn != null?cn.getSuperInterfaces():null;
       while(it_sifs != null && it_sifs.hasNext()) {
         snum++;
         it_sifs.next();
@@ -1274,18 +1415,18 @@ public class BuildCode {
         }
         ClassDescriptor cdsuper=cn.getSuperDesc();
         output.print(cdsuper.getId());
-      } 
-      it_sifs = cn != null? cn.getSuperInterfaces() : null;
+      }
+      it_sifs = cn != null?cn.getSuperInterfaces():null;
       while(it_sifs != null && it_sifs.hasNext()) {
         if(ncomma) {
           output.print(",");
         }
         output.print(((ClassDescriptor)it_sifs.next()).getId()+state.numClasses()+state.numArrays());
       }
-      
+
       output.println("};");
     }
-    
+
     for(int i=0; i<state.numArrays(); i++) {
       TypeDescriptor arraytd=arraytable[i];
       ClassDescriptor arraycd=arraytd.getClassDesc();
@@ -1303,7 +1444,7 @@ public class BuildCode {
       if((arraycd != null) && (arraycd.getSuperDesc() != null)) {
         snum++;
       }
-      Iterator it_sifs = arraycd != null? arraycd.getSuperInterfaces() : null;
+      Iterator it_sifs = arraycd != null?arraycd.getSuperInterfaces():null;
       while(it_sifs != null && it_sifs.hasNext()) {
         snum++;
         it_sifs.next();
@@ -1322,11 +1463,11 @@ public class BuildCode {
         if (ncomma)
           output.print(", ");
         output.print(type);
-      } 
-      it_sifs = arraycd != null? arraycd.getSuperInterfaces() : null;
+      }
+      it_sifs = arraycd != null?arraycd.getSuperInterfaces():null;
       while(it_sifs != null && it_sifs.hasNext()) {
         ClassDescriptor ifcd = (ClassDescriptor)it_sifs.next();
-        int type = checkarraysupertype(ifcd , arraytd);
+        int type = checkarraysupertype(ifcd, arraytd);
         if(type != -1) {
           type += state.numClasses();
         }
@@ -1336,7 +1477,7 @@ public class BuildCode {
       }
       output.println("};");
     }
-    
+
     for(int i=0; i<state.numInterfaces(); i++) {
       ClassDescriptor cn=ifarray[i];
       if(cn == null) {
@@ -1348,7 +1489,7 @@ public class BuildCode {
       if((cn != null) && (cn.getSuperDesc() != null)) {
         snum++;
       }
-      Iterator it_sifs = cn != null? cn.getSuperInterfaces() : null;
+      Iterator it_sifs = cn != null?cn.getSuperInterfaces():null;
       while(it_sifs != null && it_sifs.hasNext()) {
         snum++;
         it_sifs.next();
@@ -1361,24 +1502,24 @@ public class BuildCode {
         }
         ClassDescriptor cdsuper=cn.getSuperDesc();
         output.print(cdsuper.getId());
-      } 
-      it_sifs = cn != null? cn.getSuperInterfaces() : null;
+      }
+      it_sifs = cn != null?cn.getSuperInterfaces():null;
       while(it_sifs != null && it_sifs.hasNext()) {
         if(ncomma) {
           output.print(",");
         }
         output.print(((ClassDescriptor)it_sifs.next()).getId()+state.numClasses()+state.numArrays());
       }
-      
+
       output.println("};");
     }
-    
+
     output.println("int* supertypes[]={");
     boolean needcomma=false;
     for(int i=0; i<state.numClasses(); i++) {
       ClassDescriptor cn=cdarray[i];
       if (needcomma)
-	output.println(",");
+        output.println(",");
       needcomma=true;
       if(cn != null) {
         output.print("supertypes" + cn.getSafeSymbol());
@@ -1386,18 +1527,18 @@ public class BuildCode {
         output.print(0);
       }
     }
-    
+
     for(int i=0; i<state.numArrays(); i++) {
       if (needcomma)
         output.println(",");
       needcomma = true;
       output.print("supertypes___arraytype___" + (i+state.numClasses()));
     }
-    
+
     for(int i=0; i<state.numInterfaces(); i++) {
       ClassDescriptor cn=ifarray[i];
       if (needcomma)
-    output.println(",");
+        output.println(",");
       needcomma=true;
       output.print("supertypes" + cn.getSafeSymbol());
     }
@@ -1424,26 +1565,21 @@ public class BuildCode {
       fieldorder.put(cn,fields);
 
       Vector fieldvec=cn.getFieldVec();
+fldloop:
       for(int i=0; i<fieldvec.size(); i++) {
-	FieldDescriptor fd=(FieldDescriptor)fieldvec.get(i);
-	if((sp != null) && sp.getFieldTable().contains(fd.getSymbol())) {
-	  // a shadow field
-	} else {
-	  it_sifs = sitbl.getDescriptorsIterator();
-	  boolean hasprinted = false;
-	  while(it_sifs.hasNext()) {
-	    ClassDescriptor si = (ClassDescriptor)it_sifs.next();
-	    if(si.getFieldTable().contains(fd.getSymbol())) {
-	      hasprinted = true;
-	      break;
-	    }
-	  }
-	  if(hasprinted) {
-	    // this field has been defined in the super class
-	  } else {
-	    fields.add(fd);
-	  }
-	}
+        FieldDescriptor fd=(FieldDescriptor)fieldvec.get(i);
+        if((sp != null) && sp.getFieldTable().contains(fd.getSymbol())) {
+          // a shadow field
+        } else {
+          it_sifs = sitbl.getDescriptorsIterator();
+          while(it_sifs.hasNext()) {
+            ClassDescriptor si = (ClassDescriptor)it_sifs.next();
+            if(si.getFieldTable().contains(fd.getSymbol())) {
+              continue fldloop;
+            }
+          }
+          fields.add(fd);
+        }
       }
     }
     //Vector fields=(Vector)fieldorder.get(cn);
@@ -1461,40 +1597,40 @@ public class BuildCode {
       }
       if (fd.getType().isClass()
           && fd.getType().getClassDesc().isEnum()) {
-	classdefout.println("  int " + fd.getSafeSymbol() + ";");
+        classdefout.println("  int " + fd.getSafeSymbol() + ";");
       } else if (fd.getType().isClass()||fd.getType().isArray()) {
-	if (fd.isStatic()) {
-	  // TODO add version for normal Java later
-	  // static field
-	  if(globaldefout != null) {
-	    if(fd.isVolatile()) {
-	      globaldefout.println("  volatile struct "+fd.getType().getSafeSymbol()+ " * "+fd.getSafeSymbol()+";");
-	    } else {
-	      globaldefout.println("  struct "+fd.getType().getSafeSymbol()+ " * "+fd.getSafeSymbol()+";");
-	    }
-	    globaldefscount++;
-	  }
-	} else if (fd.isVolatile()) {
-	  //volatile field
-	  classdefout.println("  volatile struct "+fd.getType().getSafeSymbol()+ " * "+fd.getSafeSymbol()+";");
-	} else {
-	  classdefout.println("  struct "+fd.getType().getSafeSymbol()+" * "+fd.getSafeSymbol()+";");
-	}
+        if (fd.isStatic()) {
+          // TODO add version for normal Java later
+          // static field
+          if(globaldefout != null) {
+            if(fd.isVolatile()) {
+              globaldefout.println("  volatile struct "+fd.getType().getSafeSymbol()+ " * "+fd.getSafeSymbol()+";");
+            } else {
+              globaldefout.println("  struct "+fd.getType().getSafeSymbol()+ " * "+fd.getSafeSymbol()+";");
+            }
+            globaldefscount++;
+          }
+        } else if (fd.isVolatile()) {
+          //volatile field
+          classdefout.println("  volatile struct "+fd.getType().getSafeSymbol()+ " * "+fd.getSafeSymbol()+";");
+        } else {
+          classdefout.println("  struct "+fd.getType().getSafeSymbol()+" * "+fd.getSafeSymbol()+";");
+        }
       } else if (fd.isStatic()) {
-	// TODO add version for normal Java later
-	// static field
-	if(globaldefout != null) {
-	  if(fd.isVolatile()) {
-	    globaldefprimout.println("  volatile "+fd.getType().getSafeSymbol()+ " "+fd.getSafeSymbol()+";");
-	  } else {
-	    globaldefprimout.println("  "+fd.getType().getSafeSymbol()+ " "+fd.getSafeSymbol()+";");
-	  }
-	}
+        // TODO add version for normal Java later
+        // static field
+        if(globaldefout != null) {
+          if(fd.isVolatile()) {
+            globaldefprimout.println("  volatile "+fd.getType().getSafeSymbol()+ " "+fd.getSafeSymbol()+";");
+          } else {
+            globaldefprimout.println("  "+fd.getType().getSafeSymbol()+ " "+fd.getSafeSymbol()+";");
+          }
+        }
       } else if (fd.isVolatile()) {
-	//volatile field
-	classdefout.println("  volatile "+fd.getType().getSafeSymbol()+ " "+fd.getSafeSymbol()+";");
+        //volatile field
+        classdefout.println("  volatile "+fd.getType().getSafeSymbol()+ " "+fd.getSafeSymbol()+";");
       } else
-	classdefout.println("  "+fd.getType().getSafeSymbol()+" "+fd.getSafeSymbol()+";");
+        classdefout.println("  "+fd.getType().getSafeSymbol()+" "+fd.getSafeSymbol()+";");
     }
   }
 
@@ -1511,22 +1647,22 @@ public class BuildCode {
       Hashtable flags=new Hashtable();
       flagorder.put(cn,flags);
       if (sp!=null) {
-	Hashtable superflags=(Hashtable)flagorder.get(sp);
-	Iterator superflagit=superflags.keySet().iterator();
-	while(superflagit.hasNext()) {
-	  FlagDescriptor fd=(FlagDescriptor)superflagit.next();
-	  Integer number=(Integer)superflags.get(fd);
-	  flags.put(fd, number);
-	  if ((number.intValue()+1)>max)
-	    max=number.intValue()+1;
-	}
+        Hashtable superflags=(Hashtable)flagorder.get(sp);
+        Iterator superflagit=superflags.keySet().iterator();
+        while(superflagit.hasNext()) {
+          FlagDescriptor fd=(FlagDescriptor)superflagit.next();
+          Integer number=(Integer)superflags.get(fd);
+          flags.put(fd, number);
+          if ((number.intValue()+1)>max)
+            max=number.intValue()+1;
+        }
       }
 
       Iterator flagit=cn.getFlags();
       while(flagit.hasNext()) {
-	FlagDescriptor fd=(FlagDescriptor)flagit.next();
-	if (sp==null||!sp.getFlagTable().contains(fd.getSymbol()))
-	  flags.put(fd, new Integer(max++));
+        FlagDescriptor fd=(FlagDescriptor)flagit.next();
+        if (sp==null||!sp.getFlagTable().contains(fd.getSymbol()))
+          flags.put(fd, new Integer(max++));
       }
     }
   }
@@ -1540,16 +1676,19 @@ public class BuildCode {
     /* Output class structure */
     classdefout.println("struct "+cn.getSafeSymbol()+" {");
     classdefout.println("  int type;");
-
+    classdefout.println("  int hashcode;");
 
     additionalClassObjectFields(classdefout);
+    for(BuildCodeExtension bcx: extensions) {
+      bcx.additionalClassObjectFields(classdefout);
+    }
 
 
     if (state.EVENTMONITOR) {
       classdefout.println("  int objuid;");
     }
     if (state.THREAD) {
-      classdefout.println("  pthread_t tid;");
+      classdefout.println("  volatile int tid;");
       classdefout.println("  volatile int notifycount;");
     }
     if (state.MGC) {
@@ -1557,28 +1696,40 @@ public class BuildCode {
       classdefout.println("  volatile int notifycount;");
       classdefout.println("  volatile int objlock;");
       if(state.MULTICOREGC) {
-	classdefout.println("  int marked;");
+        //classdefout.println("  int marked;");
+      }
+      if(state.PMC) {
+        classdefout.println("  int marked;");
+	classdefout.println("  void * backward;");
       }
     }
     if (state.TASK) {
       classdefout.println("  int flag;");
+      classdefout.println("  int ___cachedCode___;");
       if((!state.MULTICORE) || (cn.getSymbol().equals("TagDescriptor"))) {
-	classdefout.println("  void * flagptr;");
-      } else if (state.MULTICORE) {
-	classdefout.println("  int version;");
-	classdefout.println("  int * lock;"); // lock entry for this obj
-	classdefout.println("  int mutex;");
-	classdefout.println("  int lockcount;");
-	if(state.MULTICOREGC) {
+        classdefout.println("  void * flagptr;");
+      }
+      if (state.MULTICORE) {
+        classdefout.println("  int version;");
+        classdefout.println("  int * lock;"); // lock entry for this obj
+        classdefout.println("  int mutex;");
+        classdefout.println("  volatile int lockcount;");
+        if(state.MULTICOREGC) {
+          //classdefout.println("  int marked;");
+        }
+	if(state.PMC) {
 	  classdefout.println("  int marked;");
+	  classdefout.println("  void * backward;");
 	}
       }
       if (state.OPTIONAL) {
-	classdefout.println("  int numfses;");
-	classdefout.println("  int * fses;");
+        classdefout.println("  int numfses;");
+        classdefout.println("  int * fses;");
       }
     }
-    printClassStruct(cn, classdefout, globaldefout, globaldefprimout);
+    if (javabuilder==null||javabuilder.hasLayout(cn))
+      printClassStruct(cn, classdefout, globaldefout, globaldefprimout);
+
     printedfieldstbl.clear(); // = new Hashtable<String, ClassDescriptor>();
     classdefout.println("};\n");
     generateCallStructsMethods(cn, output, headersout);
@@ -1589,21 +1740,30 @@ public class BuildCode {
     for(Iterator methodit=cn.getMethods(); methodit.hasNext(); ) {
       MethodDescriptor md=(MethodDescriptor)methodit.next();
 
-      if (!callgraph.isCallable(md)) {
-	continue;
+      FlatMethod fm=state.getMethodFlat(md);
+
+      if (!callgraph.isCallable(md)&&(!md.isStaticBlock()||!callgraph.isInit(cn))) {
+        if (callgraph.isCalled(md)) {
+          generateTempStructs(fm);
+          generateMethodParam(cn, md, output);
+        }
+        continue;
       }
 
+      generateTempStructs(fm);
+      generateMethodParam(cn, md, output);
+
       generateMethod(cn, md, headersout, output);
     }
   }
 
   protected void generateMethodParam(ClassDescriptor cn, MethodDescriptor md, PrintWriter output) {
     /* Output parameter structure */
-    if ((GENERATEPRECISEGC) || (this.state.MULTICOREGC)) {
+    if ((GENERATEPRECISEGC) || state.MULTICOREGC||state.PMC) {
       if(md.isInvokedByStatic() && !md.isStaticBlock() && !md.getModifiers().isNative()) {
         // generate the staticinit version
         String mdstring = md.getSafeMethodDescriptor() + "staticinit";
-        
+
         ParamsObject objectparams=(ParamsObject) paramstable.get(md);
         output.println("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+mdstring+"_params {");
         output.println("  int size;");
@@ -1618,40 +1778,36 @@ public class BuildCode {
         }
         output.println("};\n");
       }
-      
+
       ParamsObject objectparams=(ParamsObject) paramstable.get(md);
       output.println("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params {");
       output.println("  int size;");
       output.println("  void * next;");
       for(int i=0; i<objectparams.numPointers(); i++) {
-	TempDescriptor temp=objectparams.getPointer(i);
-	if(temp.getType().isClass() && temp.getType().getClassDesc().isEnum()) {
-	  output.println("  int " + temp.getSafeSymbol() + ";");
-	} else {
-	  output.println("  struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
-	}
+        TempDescriptor temp=objectparams.getPointer(i);
+        if(temp.getType().isClass() && temp.getType().getClassDesc().isEnum()) {
+          output.println("  int " + temp.getSafeSymbol() + ";");
+        } else {
+          output.println("  struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
+        }
       }
       output.println("};\n");
     }
   }
 
   protected void generateMethod(ClassDescriptor cn, MethodDescriptor md, PrintWriter headersout, PrintWriter output) {
-    FlatMethod fm=state.getMethodFlat(md);
-    generateTempStructs(fm);
-
     ParamsObject objectparams=(ParamsObject) paramstable.get(md);
     TempObject objecttemps=(TempObject) tempstable.get(md);
-    
+
     boolean printcomma = false;
-    
-    generateMethodParam(cn, md, output);
-    
+
+
     if(md.isInvokedByStatic() && !md.isStaticBlock() && !md.getModifiers().isNative()) {
       // generate the staticinit version
       String mdstring = md.getSafeMethodDescriptor() + "staticinit";
 
       /* Output temp structure */
-      if ((GENERATEPRECISEGC) || (this.state.MULTICOREGC)) {
+      if ((GENERATEPRECISEGC) || state.MULTICOREGC||state.PMC) {
         output.println("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+mdstring+"_locals {");
         output.println("  int size;");
         output.println("  void * next;");
@@ -1664,7 +1820,7 @@ public class BuildCode {
         }
         output.println("};\n");
       }
-      
+
       headersout.println("#define D"+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+mdstring+" 1");
       /* First the return type */
       if (md.getReturnType()!=null) {
@@ -1681,7 +1837,7 @@ public class BuildCode {
       /* Next the method name */
       headersout.print(cn.getSafeSymbol()+md.getSafeSymbol()+"_"+mdstring+"(");
       printcomma=false;
-      if ((GENERATEPRECISEGC) || (this.state.MULTICOREGC)) {
+      if ((GENERATEPRECISEGC) || state.MULTICOREGC||state.PMC) {
         headersout.print("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+mdstring+"_params * "+paramsprefix);
         printcomma=true;
       }
@@ -1706,16 +1862,16 @@ public class BuildCode {
     }
 
     /* Output temp structure */
-    if ((GENERATEPRECISEGC) || (this.state.MULTICOREGC)) {
+    if ((GENERATEPRECISEGC) || state.MULTICOREGC||state.PMC) {
       output.println("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_locals {");
       output.println("  int size;");
       output.println("  void * next;");
       for(int i=0; i<objecttemps.numPointers(); i++) {
-	TempDescriptor temp=objecttemps.getPointer(i);
-	if (!temp.getType().isArray() && temp.getType().isNull())
-	  output.println("  void * "+temp.getSafeSymbol()+";");
-	else
-	  output.println("  struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
+        TempDescriptor temp=objecttemps.getPointer(i);
+        if (!temp.getType().isArray() && temp.getType().isNull())
+          output.println("  void * "+temp.getSafeSymbol()+";");
+        else
+          output.println("  struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
       }
       output.println("};\n");
     }
@@ -1725,11 +1881,11 @@ public class BuildCode {
     /* First the return type */
     if (md.getReturnType()!=null) {
       if(md.getReturnType().isClass() && md.getReturnType().getClassDesc().isEnum()) {
-	headersout.println("  int ");
+        headersout.println("  int ");
       } else if (md.getReturnType().isClass()||md.getReturnType().isArray())
-	headersout.print("struct " + md.getReturnType().getSafeSymbol()+" * ");
+        headersout.print("struct " + md.getReturnType().getSafeSymbol()+" * ");
       else
-	headersout.print(md.getReturnType().getSafeSymbol()+" ");
+        headersout.print(md.getReturnType().getSafeSymbol()+" ");
     } else
       //catch the constructor case
       headersout.print("void ");
@@ -1737,7 +1893,7 @@ public class BuildCode {
     /* Next the method name */
     headersout.print(cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(");
     printcomma=false;
-    if ((GENERATEPRECISEGC) || (this.state.MULTICOREGC)) {
+    if ((GENERATEPRECISEGC) || state.MULTICOREGC||state.PMC) {
       headersout.print("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * "+paramsprefix);
       printcomma=true;
     }
@@ -1746,14 +1902,14 @@ public class BuildCode {
     for(int i=0; i<objectparams.numPrimitives(); i++) {
       TempDescriptor temp=objectparams.getPrimitive(i);
       if (printcomma)
-	headersout.print(", ");
+        headersout.print(", ");
       printcomma=true;
       if(temp.getType().isClass() && temp.getType().getClassDesc().isEnum()) {
-	headersout.print("int " + temp.getSafeSymbol());
+        headersout.print("int " + temp.getSafeSymbol());
       } else if (temp.getType().isClass()||temp.getType().isArray())
-	headersout.print("struct " + temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol());
+        headersout.print("struct " + temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol());
       else
-	headersout.print(temp.getType().getSafeSymbol()+" "+temp.getSafeSymbol());
+        headersout.print(temp.getType().getSafeSymbol()+" "+temp.getSafeSymbol());
     }
     if(md.getSymbol().equals("MonitorEnter") && state.OBJECTLOCKDEBUG) {
       headersout.print(", int linenum");
@@ -1780,68 +1936,129 @@ public class BuildCode {
       TempObject objecttemps=(TempObject) tempstable.get(task);
 
       /* Output parameter structure */
-      if ((GENERATEPRECISEGC) || (this.state.MULTICOREGC)) {
-	output.println("struct "+task.getSafeSymbol()+"_params {");
-	output.println("  int size;");
-	output.println("  void * next;");
-	for(int i=0; i<objectparams.numPointers(); i++) {
-	  TempDescriptor temp=objectparams.getPointer(i);
-	  output.println("  struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
-	}
-
-	output.println("};\n");
-	if ((objectparams.numPointers()+fm.numTags())>maxtaskparams) {
-	  maxtaskparams=objectparams.numPointers()+fm.numTags();
-	}
+      if ((GENERATEPRECISEGC) || state.MULTICOREGC||state.PMC) {
+        output.println("struct "+task.getSafeSymbol()+"_params {");
+        output.println("  int size;");
+        output.println("  void * next;");
+        for(int i=0; i<objectparams.numPointers(); i++) {
+          TempDescriptor temp=objectparams.getPointer(i);
+          output.println("  struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
+        }
+
+        output.println("};\n");
+        if ((objectparams.numPointers()+fm.numTags())>maxtaskparams) {
+          maxtaskparams=objectparams.numPointers()+fm.numTags();
+        }
       }
 
       /* Output temp structure */
-      if ((GENERATEPRECISEGC) || (this.state.MULTICOREGC)) {
-	output.println("struct "+task.getSafeSymbol()+"_locals {");
-	output.println("  int size;");
-	output.println("  void * next;");
-	for(int i=0; i<objecttemps.numPointers(); i++) {
-	  TempDescriptor temp=objecttemps.getPointer(i);
-	  if (!temp.getType().isArray() && temp.getType().isNull())
-	    output.println("  void * "+temp.getSafeSymbol()+";");
-	  else if(temp.getType().isTag())
-	    output.println("  struct "+
-	                   (new TypeDescriptor(typeutil.getClass(TypeUtil.TagClass))).getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
-	  else
-	    output.println("  struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
-	}
-	output.println("};\n");
+      if ((GENERATEPRECISEGC) || state.MULTICOREGC||state.PMC) {
+        output.println("struct "+task.getSafeSymbol()+"_locals {");
+        output.println("  int size;");
+        output.println("  void * next;");
+        for(int i=0; i<objecttemps.numPointers(); i++) {
+          TempDescriptor temp=objecttemps.getPointer(i);
+          if (!temp.getType().isArray() && temp.getType().isNull())
+            output.println("  void * "+temp.getSafeSymbol()+";");
+          else if(temp.getType().isTag())
+            output.println("  struct "+
+                           (new TypeDescriptor(typeutil.getClass(TypeUtil.TagClass))).getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
+          else
+            output.println("  struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
+        }
+        output.println("};\n");
       }
 
       /* Output task declaration */
       headersout.print("void " + task.getSafeSymbol()+"(");
 
       boolean printcomma=false;
-      if ((GENERATEPRECISEGC) || (this.state.MULTICOREGC)) {
-	headersout.print("struct "+task.getSafeSymbol()+"_params * "+paramsprefix);
+      if ((GENERATEPRECISEGC) || state.MULTICOREGC||state.PMC) {
+        headersout.print("struct "+task.getSafeSymbol()+"_params * "+paramsprefix);
       } else
-	headersout.print("void * parameterarray[]");
+        headersout.print("void * parameterarray[]");
       headersout.println(");\n");
     }
   }
 
+  protected void generateNativeFlatMethod(FlatMethod fm, PrintWriter outmethod) {
+    MethodDescriptor md=fm.getMethod();
+    ClassDescriptor cd=md.getClassDesc();
+    generateHeader(fm, md, outmethod);
+    int startindex=0;
+    outmethod.println("JNIPUSHFRAME();");
+    if (md.getModifiers().isStatic()) {
+      outmethod.println("jobject rec=JNIWRAP(((void **)(((char *) &(global_defs_p->classobjs->___length___))+sizeof(int)))[" + cd.getId() + "]);");
+    } else {
+      outmethod.println("jobject rec=JNIWRAP("+generateTemp(fm, fm.getParameter(0))+");");
+      startindex=1;
+    }
+    for(int i=startindex; i<fm.numParameters(); i++) {
+      TempDescriptor tmp=fm.getParameter(i);
+      if (tmp.getType().isPtr()) {
+        outmethod.println("jobject param"+i+"=JNIWRAP("+generateTemp(fm, fm.getParameter(i))+");");
+      }
+    }
+    if (GENERATEPRECISEGC) {
+      outmethod.println("stopforgc((struct garbagelist *)___params___);");
+    }
+    if (!md.getReturnType().isVoid()) {
+      if (md.getReturnType().isPtr())
+        outmethod.print("jobject retval=");
+      else
+        outmethod.print(md.getReturnType().getSafeSymbol()+" retval=");
+    }
+    outmethod.print("Java_");
+    outmethod.print(cd.getPackage().replace('.','_')+"_"+cd.getClassName().replace('.','_'));
+    outmethod.print("_"+md.getSymbol()+"(");
+    outmethod.print("JNI_vtable, rec");
+
+    for(int i=startindex; i<fm.numParameters(); i++) {
+      outmethod.print(", ");
+      TempDescriptor tmp=fm.getParameter(i);
+      if (tmp.getType().isPtr()) {
+        outmethod.print("param"+i);
+      } else {
+        outmethod.print(generateTemp(fm, tmp));
+      }
+    }
+    outmethod.println(");");
+    if (GENERATEPRECISEGC) {
+      outmethod.println("restartaftergc();");
+    }
+    if (!md.getReturnType().isVoid()) {
+      if (md.getReturnType().isPtr()) {
+        outmethod.println("struct ___Object___ * retobj=JNIUNWRAP(retval);");
+        outmethod.println("JNIPOPFRAME();");
+        outmethod.println("return retobj;");
+      } else {
+        outmethod.println("JNIPOPFRAME();");
+        outmethod.println("return retval;");
+      }
+    } else
+      outmethod.println("JNIPOPFRAME();");
+
+    outmethod.println("}");
+    outmethod.println("");
+  }
+
   protected void generateFlatMethod(FlatMethod fm, PrintWriter output) {
     if (State.PRINTFLAT)
       System.out.println(fm.printMethod());
     MethodDescriptor md=fm.getMethod();
     TaskDescriptor task=fm.getTask();
-    ClassDescriptor cn=md!=null ? md.getClassDesc() : null;
-    ParamsObject objectparams=(ParamsObject)paramstable.get(md!=null ? md : task);
-    
+    ClassDescriptor cn=md!=null?md.getClassDesc():null;
+    ParamsObject objectparams=(ParamsObject)paramstable.get(md!=null?md:task);
+
     if((md != null) && md.isInvokedByStatic() && !md.isStaticBlock() && !md.getModifiers().isNative()) {
       // generate a special static init version
       mgcstaticinit = true;
       String mdstring = md.getSafeMethodDescriptor() + "staticinit";
-      
-      generateHeader(fm, md!=null ? md : task,output);
-      TempObject objecttemp=(TempObject) tempstable.get(md!=null ? md : task);
-      
-      if ((GENERATEPRECISEGC) || (this.state.MULTICOREGC)) {
+
+      generateHeader(fm, md!=null?md:task,output);
+      TempObject objecttemp=(TempObject) tempstable.get(md!=null?md:task);
+
+      if ((GENERATEPRECISEGC) || state.MULTICOREGC||state.PMC) {
         output.print("   struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+mdstring+"_locals "+localsprefix+"={");
         output.print(objecttemp.numPointers()+",");
         output.print(paramsprefix);
@@ -1864,45 +2081,47 @@ public class BuildCode {
       }
 
       additionalCodeAtTopFlatMethodBody(output, fm);
+      for(BuildCodeExtension bcx: extensions) {
+        bcx.additionalCodeAtTopFlatMethodBody(output, fm);
+      }
 
       /* Check to see if we need to do a GC if this is a
        * multi-threaded program...*/
 
-      if (((state.OOOJAVA||state.THREAD)&&GENERATEPRECISEGC)
-          || this.state.MULTICOREGC) {
+      if (((state.OOOJAVA||state.THREAD)&&GENERATEPRECISEGC) || state.MULTICOREGC||state.PMC) {
         //Don't bother if we aren't in recursive methods...The loops case will catch it
         if (callgraph.getAllMethods(md).contains(md)) {
-          if (this.state.MULTICOREGC) {
-            output.println("if(gcflag) gc("+localsprefixaddr+");");
+          if (state.MULTICOREGC||state.PMC) {
+            output.println("GCCHECK("+localsprefixaddr+");");
           } else {
             output.println("if (unlikely(needtocollect)) checkcollect("+localsprefixaddr+");");
           }
         }
       }
-      
+
       generateCode(fm.getNext(0), fm, null, output);
 
       output.println("}\n\n");
-      
+
       mgcstaticinit = false;
     }
-    
-    generateHeader(fm, md!=null ? md : task,output);
-    TempObject objecttemp=(TempObject) tempstable.get(md!=null ? md : task);
+
+    generateHeader(fm, md!=null?md:task,output);
+    TempObject objecttemp=(TempObject) tempstable.get(md!=null?md:task);
 
     if((md != null) && (md.isStaticBlock())) {
       mgcstaticinit = true;
     }
 
-    if ((GENERATEPRECISEGC) || (this.state.MULTICOREGC)) {
+    if ((GENERATEPRECISEGC) || state.MULTICOREGC||state.PMC) {
       if (md!=null)
-	output.print("   struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_locals "+localsprefix+"={");
+        output.print("   struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_locals "+localsprefix+"={");
       else
-	output.print("   struct "+task.getSafeSymbol()+"_locals "+localsprefix+"={");
+        output.print("   struct "+task.getSafeSymbol()+"_locals "+localsprefix+"={");
       output.print(objecttemp.numPointers()+",");
       output.print(paramsprefix);
       for(int j=0; j<objecttemp.numPointers(); j++)
-	output.print(", NULL");
+        output.print(", NULL");
       output.println("};");
     }
 
@@ -1910,33 +2129,36 @@ public class BuildCode {
       TempDescriptor td=objecttemp.getPrimitive(i);
       TypeDescriptor type=td.getType();
       if (type.isNull() && !type.isArray())
-	output.println("   void * "+td.getSafeSymbol()+";");
+        output.println("   void * "+td.getSafeSymbol()+";");
       else if (type.isClass() && type.getClassDesc().isEnum()) {
-	output.println("   int " + td.getSafeSymbol() + ";");
+        output.println("   int " + td.getSafeSymbol() + ";");
       } else if (type.isClass()||type.isArray())
-	output.println("   struct "+type.getSafeSymbol()+" * "+td.getSafeSymbol()+";");
+        output.println("   struct "+type.getSafeSymbol()+" * "+td.getSafeSymbol()+";");
       else
-	output.println("   "+type.getSafeSymbol()+" "+td.getSafeSymbol()+";");
+        output.println("   "+type.getSafeSymbol()+" "+td.getSafeSymbol()+";");
     }
 
     additionalCodeAtTopFlatMethodBody(output, fm);
+    for(BuildCodeExtension bcx: extensions) {
+      bcx.additionalCodeAtTopFlatMethodBody(output, fm);
+    }
 
     /* Check to see if we need to do a GC if this is a
      * multi-threaded program...*/
 
     if (((state.OOOJAVA||state.THREAD)&&GENERATEPRECISEGC)
-        || this.state.MULTICOREGC) {
+        || state.MULTICOREGC||state.PMC) {
       //Don't bother if we aren't in recursive methods...The loops case will catch it
       if (callgraph.getAllMethods(md).contains(md)) {
-	if (this.state.MULTICOREGC) {
-	  output.println("if(gcflag) gc("+localsprefixaddr+");");
-	} else {
-	  output.println("if (unlikely(needtocollect)) checkcollect("+localsprefixaddr+");");
-	}
+        if (state.MULTICOREGC||state.PMC) {
+          output.println("GCCHECK("+localsprefixaddr+");");
+        } else {
+          output.println("if (unlikely(needtocollect)) checkcollect("+localsprefixaddr+");");
+        }
       }
     }
 
-    if(fm.getMethod().isStaticBlock()) {
+    if(fm.getMethod()!=null&&fm.getMethod().isStaticBlock()) {
       // a static block, check if it has been executed
       output.println("  if(global_defsprim_p->" + cn.getSafeSymbol()+"static_block_exe_flag != 0) {");
       output.println("    return;");
@@ -1947,7 +2169,7 @@ public class BuildCode {
     generateCode(fm.getNext(0), fm, null, output);
 
     output.println("}\n\n");
-    
+
     mgcstaticinit = false;
   }
 
@@ -1974,70 +2196,70 @@ public class BuildCode {
     tovisit.add(first);
     while(current_node!=null||!tovisit.isEmpty()) {
       if (current_node==null) {
-	current_node=(FlatNode)tovisit.iterator().next();
-	tovisit.remove(current_node);
+        current_node=(FlatNode)tovisit.iterator().next();
+        tovisit.remove(current_node);
       } else if (tovisit.contains(current_node)) {
-	tovisit.remove(current_node);
+        tovisit.remove(current_node);
       }
       visited.add(current_node);
       if (nodetolabel.containsKey(current_node)) {
-	output.println("L"+nodetolabel.get(current_node)+":");
+        output.println("L"+nodetolabel.get(current_node)+":");
       }
       if (state.INSTRUCTIONFAILURE) {
-	if (state.THREAD) {
-	  output.println("if ((++instructioncount)>failurecount) {instructioncount=0;injectinstructionfailure();}");
-	} else
-	  output.println("if ((--instructioncount)==0) injectinstructionfailure();");
+        if (state.THREAD) {
+          output.println("if ((++instructioncount)>failurecount) {instructioncount=0;injectinstructionfailure();}");
+        } else
+          output.println("if ((--instructioncount)==0) injectinstructionfailure();");
       }
       if (current_node.numNext()==0||stopset!=null&&stopset.contains(current_node)) {
-	output.print("   ");
-	generateFlatNode(fm, current_node, output);
-
-	if (state.OOOJAVA && stopset!=null) {
-	  assert first.getPrev(0) instanceof FlatSESEEnterNode;
-	  assert current_node       instanceof FlatSESEExitNode;
-	  FlatSESEEnterNode fsen = (FlatSESEEnterNode) first.getPrev(0);
-	  FlatSESEExitNode fsxn = (FlatSESEExitNode)  current_node;
-	  assert fsen.getFlatExit().equals(fsxn);
-	  assert fsxn.getFlatEnter().equals(fsen);
-	}
-	if (current_node.kind()!=FKind.FlatReturnNode) {
-	  if((fm.getMethod() != null) && (fm.getMethod().isStaticBlock())) {
-	    // a static block, check if it has been executed
-	    output.println("  global_defsprim_p->" + fm.getMethod().getClassDesc().getSafeSymbol()+"static_block_exe_flag = 1;");
-	    output.println("");
-	  }
-	  output.println("   return;");
-	}
-	current_node=null;
+        output.print("   ");
+        generateFlatNode(fm, current_node, output);
+
+        if (state.OOOJAVA && stopset!=null) {
+          assert first.getPrev(0) instanceof FlatSESEEnterNode;
+          assert current_node       instanceof FlatSESEExitNode;
+          FlatSESEEnterNode fsen = (FlatSESEEnterNode) first.getPrev(0);
+          FlatSESEExitNode fsxn = (FlatSESEExitNode)  current_node;
+          assert fsen.getFlatExit().equals(fsxn);
+          assert fsxn.getFlatEnter().equals(fsen);
+        }
+        if (current_node.kind()!=FKind.FlatReturnNode) {
+          if((fm.getMethod() != null) && (fm.getMethod().isStaticBlock())) {
+            // a static block, check if it has been executed
+            output.println("  global_defsprim_p->" + fm.getMethod().getClassDesc().getSafeSymbol()+"static_block_exe_flag = 1;");
+            output.println("");
+          }
+          output.println("   return;");
+        }
+        current_node=null;
       } else if(current_node.numNext()==1) {
-	FlatNode nextnode;
-	if (state.OOOJAVA &&
-	    current_node.kind()==FKind.FlatSESEEnterNode) {
-	  FlatSESEEnterNode fsen = (FlatSESEEnterNode)current_node;
-	  generateFlatNode(fm, current_node, output);
-	  nextnode=fsen.getFlatExit().getNext(0);
-	} else {
-	  output.print("   ");
-	  generateFlatNode(fm, current_node, output);
-	  nextnode=current_node.getNext(0);
-	}
-	if (visited.contains(nextnode)) {
-	  output.println("goto L"+nodetolabel.get(nextnode)+";");
-	  current_node=null;
-	} else
-	  current_node=nextnode;
+        FlatNode nextnode;
+        if (state.OOOJAVA &&
+            current_node.kind()==FKind.FlatSESEEnterNode) {
+          FlatSESEEnterNode fsen = (FlatSESEEnterNode)current_node;
+          generateFlatNode(fm, current_node, output);
+          nextnode=fsen.getFlatExit().getNext(0);
+        } else {
+          output.print("   ");
+          generateFlatNode(fm, current_node, output);
+          nextnode=current_node.getNext(0);
+        }
+        if (visited.contains(nextnode)) {
+          output.println("goto L"+nodetolabel.get(nextnode)+";");
+          current_node=null;
+        } else
+          current_node=nextnode;
       } else if (current_node.numNext()==2) {
-	/* Branch */
-	output.print("   ");
-	generateFlatCondBranch(fm, (FlatCondBranch)current_node, "L"+nodetolabel.get(current_node.getNext(1)), output);
-	if (!visited.contains(current_node.getNext(1)))
-	  tovisit.add(current_node.getNext(1));
-	if (visited.contains(current_node.getNext(0))) {
-	  output.println("goto L"+nodetolabel.get(current_node.getNext(0))+";");
-	  current_node=null;
-	} else
-	  current_node=current_node.getNext(0);
+        /* Branch */
+        output.print("   ");
+        generateFlatCondBranch(fm, (FlatCondBranch)current_node, "L"+nodetolabel.get(current_node.getNext(1)), output);
+        if (!visited.contains(current_node.getNext(1)))
+          tovisit.add(current_node.getNext(1));
+        if (visited.contains(current_node.getNext(0))) {
+          output.println("goto L"+nodetolabel.get(current_node.getNext(0))+";");
+          current_node=null;
+        } else
+          current_node=current_node.getNext(0);
       } else throw new Error();
     }
   }
@@ -2059,24 +2281,24 @@ public class BuildCode {
 
 
       if(lastset!=null&&lastset.contains(fn)) {
-	// if last is not null and matches, don't go
-	// any further for assigning labels
-	continue;
+        // if last is not null and matches, don't go
+        // any further for assigning labels
+        continue;
       }
 
       for(int i=0; i<fn.numNext(); i++) {
-	FlatNode nn=fn.getNext(i);
+        FlatNode nn=fn.getNext(i);
 
-	if(i>0) {
-	  //1) Edge >1 of node
-	  nodetolabel.put(nn,new Integer(labelindex++));
-	}
-	if (!visited.contains(nn)&&!tovisit.contains(nn)) {
-	  tovisit.add(nn);
-	} else {
-	  //2) Join point
-	  nodetolabel.put(nn,new Integer(labelindex++));
-	}
+        if(i>0) {
+          //1) Edge >1 of node
+          nodetolabel.put(nn,new Integer(labelindex++));
+        }
+        if (!visited.contains(nn)&&!tovisit.contains(nn)) {
+          tovisit.add(nn);
+        } else {
+          //2) Join point
+          nodetolabel.put(nn,new Integer(labelindex++));
+        }
       }
     }
     return nodetolabel;
@@ -2086,7 +2308,7 @@ public class BuildCode {
   protected String generateTemp(FlatMethod fm, TempDescriptor td) {
     MethodDescriptor md=fm.getMethod();
     TaskDescriptor task=fm.getTask();
-    TempObject objecttemps=(TempObject) tempstable.get(md!=null ? md : task);
+    TempObject objecttemps=(TempObject) tempstable.get(md!=null?md:task);
 
     if (objecttemps.isLocalPrim(td)||objecttemps.isParamPrim(td)) {
       return td.getSafeSymbol();
@@ -2107,7 +2329,12 @@ public class BuildCode {
 
   protected void generateFlatNode(FlatMethod fm, FlatNode fn, PrintWriter output) {
     if(state.LINENUM) printSourceLineNumber(fm,fn,output);
+
     additionalCodePreNode(fm, fn, output);
+    for(BuildCodeExtension bcx: extensions) {
+      bcx.additionalCodePreNode(fm, fn, output);
+    }
+
 
     switch(fn.kind()) {
     case FKind.FlatAtomicEnterNode:
@@ -2187,7 +2414,8 @@ public class BuildCode {
       break;
 
     case FKind.FlatGenReachNode:
-      // this node is just for generating a reach graph
+    case FKind.FlatGenDefReachNode:
+      // these nodes are just for generating analysis data
       // in disjointness analysis at a particular program point
       break;
 
@@ -2220,15 +2448,19 @@ public class BuildCode {
     }
 
     additionalCodePostNode(fm, fn, output);
+    for(BuildCodeExtension bcx: extensions) {
+      bcx.additionalCodePostNode(fm, fn, output);
+    }
+
   }
 
   public void generateFlatBackEdge(FlatMethod fm, FlatBackEdge fn, PrintWriter output) {
     if (((state.OOOJAVA||state.THREAD)&&GENERATEPRECISEGC)
-        || (this.state.MULTICOREGC)) {
-      if(this.state.MULTICOREGC) {
-	output.println("if (gcflag) gc("+localsprefixaddr+");");
+        || state.MULTICOREGC||state.PMC) {
+      if (state.MULTICOREGC||state.PMC) {
+        output.println("GCCHECK("+localsprefixaddr+");");
       } else {
-	output.println("if (unlikely(needtocollect)) checkcollect("+localsprefixaddr+");");
+        output.println("if (unlikely(needtocollect)) checkcollect("+localsprefixaddr+");");
       }
     } else
       output.println("/* nop */");
@@ -2238,8 +2470,8 @@ public class BuildCode {
     output.println("/* FlatOffsetNode */");
     FieldDescriptor fd=fofn.getField();
     if(!fd.isStatic()) {
-    output.println(generateTemp(fm, fofn.getDst())+ " = (short)(int) (&((struct "+fofn.getClassType().getSafeSymbol() +" *)0)->"+
-                   fd.getSafeSymbol()+");");
+      output.println(generateTemp(fm, fofn.getDst())+ " = (short)(int) (&((struct "+fofn.getClassType().getSafeSymbol() +" *)0)->"+
+                     fd.getSafeSymbol()+");");
     }
     output.println("/* offset */");
   }
@@ -2311,7 +2543,7 @@ public class BuildCode {
       TempDescriptor[] temps=fcn.getTemps();
       String[] vars=fcn.getVars();
       for(int i=0; i<temps.length; i++) {
-	output.println(varname+"->"+vars[i]+"=(unsigned int)"+generateTemp(fm, temps[i])+";");
+        output.println(varname+"->"+vars[i]+"=(unsigned int)"+generateTemp(fm, temps[i])+";");
       }
 
       output.println("if (doanalysis"+specname+"("+varname+")) {");
@@ -2328,6 +2560,7 @@ public class BuildCode {
   protected void generateFlatCall(FlatMethod fm, FlatCall fc, PrintWriter output) {
     MethodDescriptor md=fc.getMethod();
     ParamsObject objectparams=(ParamsObject)paramstable.get(md);
+
     ClassDescriptor cn=md.getClassDesc();
     String mdstring = md.getSafeMethodDescriptor();
     if(mgcstaticinit && !md.isStaticBlock() && !md.getModifiers().isNative()) {
@@ -2339,32 +2572,30 @@ public class BuildCode {
     if((md.isStatic() || md.isStaticBlock() || md.isConstructor()) &&
        ((fm.getMethod() != null) && ((fm.getMethod().isStaticBlock()) || (fm.getMethod().isInvokedByStatic())))) {
       if(!md.isInvokedByStatic()) {
-	System.err.println("Error: a method that is invoked inside a static block is not tagged!");
+        System.err.println("Error: a method that is invoked inside a static block is not tagged!");
       }
       // is a static block or is invoked in some static block
       ClassDescriptor cd = fm.getMethod().getClassDesc();
-      if(cd == cn) {
-	// the same class, do nothing
-      } else if(mgcstaticinit) {
+      if(cd != cn && mgcstaticinit && callgraph.isInit(cn)) {
         // generate static init check code if it has not done static init in main()
-	if((cn.getNumStaticFields() != 0) || (cn.getNumStaticBlocks() != 0)) {
-	  // need to check if the class' static fields have been initialized and/or
-	  // its static blocks have been executed
-	  output.println("if(global_defsprim_p->" + cn.getSafeSymbol()+"static_block_exe_flag == 0) {");
-	  if(cn.getNumStaticBlocks() != 0) {
-	    MethodDescriptor t_md = (MethodDescriptor)cn.getMethodTable().get("staticblocks");
-        if ((GENERATEPRECISEGC) || (this.state.MULTICOREGC)) {
-          output.print("       struct "+cn.getSafeSymbol()+t_md.getSafeSymbol()+"_"+t_md.getSafeMethodDescriptor()+"_params __parameterlist__={");
-          output.println("0, NULL};");
-          output.println("     "+cn.getSafeSymbol()+t_md.getSafeSymbol()+"_"+t_md.getSafeMethodDescriptor()+"(& __parameterlist__);");
-        } else {
-          output.println("  "+cn.getSafeSymbol()+t_md.getSafeSymbol()+"_"+t_md.getSafeMethodDescriptor()+"();");
+        if((cn.getNumStaticFields() != 0) || (cn.getNumStaticBlocks() != 0)) {
+          // need to check if the class' static fields have been initialized and/or
+          // its static blocks have been executed
+          output.println("if(global_defsprim_p->" + cn.getSafeSymbol()+"static_block_exe_flag == 0) {");
+          if(cn.getNumStaticBlocks() != 0) {
+            MethodDescriptor t_md = (MethodDescriptor)cn.getMethodTable().get("staticblocks");
+            if ((GENERATEPRECISEGC) || state.MULTICOREGC||state.PMC) {
+              output.print("       struct "+cn.getSafeSymbol()+t_md.getSafeSymbol()+"_"+t_md.getSafeMethodDescriptor()+"_params __parameterlist__={");
+              output.println("0, NULL};");
+              output.println("     "+cn.getSafeSymbol()+t_md.getSafeSymbol()+"_"+t_md.getSafeMethodDescriptor()+"(& __parameterlist__);");
+            } else {
+              output.println("  "+cn.getSafeSymbol()+t_md.getSafeSymbol()+"_"+t_md.getSafeMethodDescriptor()+"();");
+            }
+          } else {
+            output.println("  global_defsprim_p->" + cn.getSafeSymbol()+"static_block_exe_flag = 1;");
+          }
+          output.println("}");
         }
-	  } else {
-	    output.println("  global_defsprim_p->" + cn.getSafeSymbol()+"static_block_exe_flag = 1;");
-	  }
-	  output.println("}");
-	}
       }
     }
     if((md.getSymbol().equals("MonitorEnter") || md.getSymbol().equals("MonitorExit")) && fc.getThis().getSymbol().equals("classobj")) {
@@ -2373,53 +2604,52 @@ public class BuildCode {
         output.println("int monitorenterline = __LINE__;");
       }
       // call MonitorEnter/MonitorExit on a class obj
-      if ((GENERATEPRECISEGC) || (this.state.MULTICOREGC)) {
+      if ((GENERATEPRECISEGC) || state.MULTICOREGC||state.PMC) {
         output.print("       struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params __parameterlist__={");
-        output.println("1," + localsprefixaddr + ", global_defs_p->"+ fc.getThis().getType().getClassDesc().getSafeSymbol() +"classobj};");
+        output.println("1," + localsprefixaddr + ", ((void **)(((char *) &(global_defs_p->classobjs->___length___))+sizeof(int)))[" + fc.getThis().getType().getClassDesc().getId() + "]};");
         if(md.getSymbol().equals("MonitorEnter") && state.OBJECTLOCKDEBUG) {
           output.println("     "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(& __parameterlist__, monitorenterline);");
         } else {
-        output.println("     "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(& __parameterlist__);");
+          output.println("     "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(& __parameterlist__);");
         }
       } else {
-      output.println("       " + cn.getSafeSymbol()+md.getSafeSymbol()+"_"
-		     + md.getSafeMethodDescriptor() + "((struct ___Object___*)(global_defs_p->"
-		     + fc.getThis().getType().getClassDesc().getSafeSymbol() +"classobj));");
+        output.println("       " + cn.getSafeSymbol()+md.getSafeSymbol()+"_"
+                       + md.getSafeMethodDescriptor() + "((struct ___Object___*)(((void **)(((char *) &(global_defs_p->classobjs->___length___))+sizeof(int)))["
+                       + fc.getThis().getType().getClassDesc().getId() + "]));");
       }
       output.println("}");
       return;
     }
-    
+
     output.println("{");
     if(md.getSymbol().equals("MonitorEnter")) {
       output.println("int monitorenterline = __LINE__;");
     }
-    if ((GENERATEPRECISEGC) || (this.state.MULTICOREGC)) {
+    if (GENERATEPRECISEGC || state.MULTICOREGC||state.PMC) {
       output.print("       struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+mdstring+"_params __parameterlist__={");
       output.print(objectparams.numPointers());
       output.print(", "+localsprefixaddr);
       if (md.getThis()!=null) {
-	output.print(", ");
-	output.print("(struct "+md.getThis().getType().getSafeSymbol() +" *)"+ generateTemp(fm,fc.getThis()));
+        output.print(", ");
+        output.print("(struct "+md.getThis().getType().getSafeSymbol() +" *)"+ generateTemp(fm,fc.getThis()));
       }
       if (fc.getThis()!=null&&md.getThis()==null) {
-	System.out.println("WARNING!!!!!!!!!!!!");
-	System.out.println("Source code calls static method "+md+" on an object in "+fm.getMethod()+"!");
+        System.out.println("WARNING!!!!!!!!!!!!");
+        System.out.println("Source code calls static method "+md+" on an object in "+fm.getMethod()+"!");
       }
 
-
       for(int i=0; i<fc.numArgs(); i++) {
-	Descriptor var=md.getParameter(i);
-	TempDescriptor paramtemp=(TempDescriptor)temptovar.get(var);
-	if (objectparams.isParamPtr(paramtemp)) {
-	  TempDescriptor targ=fc.getArg(i);
-	  output.print(", ");
-	  TypeDescriptor td=md.getParamType(i);
-	  if (td.isTag())
-	    output.print("(struct "+(new TypeDescriptor(typeutil.getClass(TypeUtil.TagClass))).getSafeSymbol()  +" *)"+generateTemp(fm, targ));
-	  else
-	    output.print("(struct "+md.getParamType(i).getSafeSymbol()  +" *)"+generateTemp(fm, targ));
-	}
+        Descriptor var=md.getParameter(i);
+        TempDescriptor paramtemp=(TempDescriptor)temptovar.get(var);
+        if (objectparams.isParamPtr(paramtemp)) {
+          TempDescriptor targ=fc.getArg(i);
+          output.print(", ");
+          TypeDescriptor td=md.getParamType(i);
+          if (td.isTag())
+            output.print("(struct "+(new TypeDescriptor(typeutil.getClass(TypeUtil.TagClass))).getSafeSymbol()  +" *)"+generateTemp(fm, targ));
+          else
+            output.print("(struct "+md.getParamType(i).getSafeSymbol()  +" *)"+generateTemp(fm, targ));
+        }
       }
       output.println("};");
     }
@@ -2430,12 +2660,6 @@ public class BuildCode {
       output.print(generateTemp(fm,fc.getReturnTemp())+"=");
 
     /* Do we need to do virtual dispatch? */
-    if (!md.isStatic()&&md.getReturnType()!=null&&fc.getThis().getType().getClassDesc()==null) {
-      System.out.println(fm);
-      System.out.println(md);
-      System.out.println(fc);
-      System.out.println(fm.printMethod());
-    }
 
     if (md.isStatic()||md.getReturnType()==null||singleCall(fc.getThis().getType().getClassDesc(),md)||fc.getSuper()) {
       //no
@@ -2444,30 +2668,30 @@ public class BuildCode {
       //yes
       output.print("((");
       if (md.getReturnType().isClass() && md.getReturnType().getClassDesc().isEnum()) {
-	output.print("int ");
+        output.print("int ");
       } else if (md.getReturnType().isClass()||md.getReturnType().isArray())
-	output.print("struct " + md.getReturnType().getSafeSymbol()+" * ");
+        output.print("struct " + md.getReturnType().getSafeSymbol()+" * ");
       else
-	output.print(md.getReturnType().getSafeSymbol()+" ");
+        output.print(md.getReturnType().getSafeSymbol()+" ");
       output.print("(*)(");
 
       boolean printcomma=false;
-      if ((GENERATEPRECISEGC) || (this.state.MULTICOREGC)) {
-	output.print("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+mdstring+"_params * ");
-	printcomma=true;
+      if ((GENERATEPRECISEGC) || state.MULTICOREGC||state.PMC) {
+        output.print("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+mdstring+"_params * ");
+        printcomma=true;
       }
 
       for(int i=0; i<objectparams.numPrimitives(); i++) {
-	TempDescriptor temp=objectparams.getPrimitive(i);
-	if (printcomma)
-	  output.print(", ");
-	printcomma=true;
-	if (temp.getType().isClass() && temp.getType().getClassDesc().isEnum()) {
-	  output.print("int ");
-	} else if (temp.getType().isClass()||temp.getType().isArray())
-	  output.print("struct " + temp.getType().getSafeSymbol()+" * ");
-	else
-	  output.print(temp.getType().getSafeSymbol());
+        TempDescriptor temp=objectparams.getPrimitive(i);
+        if (printcomma)
+          output.print(", ");
+        printcomma=true;
+        if (temp.getType().isClass() && temp.getType().getClassDesc().isEnum()) {
+          output.print("int ");
+        } else if (temp.getType().isClass()||temp.getType().isArray())
+          output.print("struct " + temp.getType().getSafeSymbol()+" * ");
+        else
+          output.print(temp.getType().getSafeSymbol());
       }
 
       if(md.getSymbol().equals("MonitorEnter") && state.OBJECTLOCKDEBUG) {
@@ -2478,27 +2702,27 @@ public class BuildCode {
 
     output.print("(");
     boolean needcomma=false;
-    if ((GENERATEPRECISEGC) || (this.state.MULTICOREGC)) {
+    if ((GENERATEPRECISEGC) || state.MULTICOREGC||state.PMC) {
       output.print("&__parameterlist__");
       needcomma=true;
     }
 
-    if (!GENERATEPRECISEGC && !this.state.MULTICOREGC) {
+    if (!GENERATEPRECISEGC && !state.MULTICOREGC&&!state.PMC) {
       if (fc.getThis()!=null) {
-	TypeDescriptor ptd=null;
-	if(md.getThis() != null) {
-	  ptd = md.getThis().getType();
-	} else {
-	  ptd = fc.getThis().getType();
-	}
-	if (needcomma)
-	  output.print(",");
-	if(ptd.isClass() && ptd.getClassDesc().isEnum()) {
-	  // do nothing
-	} else if (ptd.isClass()&&!ptd.isArray())
-	  output.print("(struct "+ptd.getSafeSymbol()+" *) ");
-	output.print(generateTemp(fm,fc.getThis()));
-	needcomma=true;
+        TypeDescriptor ptd=null;
+        if(md.getThis() != null) {
+          ptd = md.getThis().getType();
+        } else {
+          ptd = fc.getThis().getType();
+        }
+        if (needcomma)
+          output.print(",");
+        if(ptd.isClass() && ptd.getClassDesc().isEnum()) {
+          // do nothing
+        } else if (ptd.isClass()&&!ptd.isArray())
+          output.print("(struct "+ptd.getSafeSymbol()+" *) ");
+        output.print(generateTemp(fm,fc.getThis()));
+        needcomma=true;
       }
     }
 
@@ -2506,23 +2730,23 @@ public class BuildCode {
       Descriptor var=md.getParameter(i);
       TempDescriptor paramtemp=(TempDescriptor)temptovar.get(var);
       if (objectparams.isParamPrim(paramtemp)) {
-	TempDescriptor targ=fc.getArg(i);
-	if (needcomma)
-	  output.print(", ");
+        TempDescriptor targ=fc.getArg(i);
+        if (needcomma)
+          output.print(", ");
 
-	TypeDescriptor ptd=md.getParamType(i);
-	if (ptd.isClass() && ptd.getClassDesc().isEnum()) {
-	  // do nothing
-	} else if (ptd.isClass()&&!ptd.isArray())
-	  output.print("(struct "+ptd.getSafeSymbol()+" *) ");
-	output.print(generateTemp(fm, targ));
-	needcomma=true;
+        TypeDescriptor ptd=md.getParamType(i);
+        if (ptd.isClass() && ptd.getClassDesc().isEnum()) {
+          // do nothing
+        } else if (ptd.isClass()&&!ptd.isArray())
+          output.print("(struct "+ptd.getSafeSymbol()+" *) ");
+        output.print(generateTemp(fm, targ));
+        needcomma=true;
       }
     }
     if(md.getSymbol().equals("MonitorEnter") && state.OBJECTLOCKDEBUG) {
       output.println(", monitorenterline);");
     } else {
-    output.println(");");
+      output.println(");");
     }
     output.println("   }");
   }
@@ -2532,73 +2756,117 @@ public class BuildCode {
       // for interfaces, always need virtual dispatch
       return false;
     } else {
-    Set subclasses=typeutil.getSubClasses(thiscd);
-    if (subclasses==null)
-      return true;
-    for(Iterator classit=subclasses.iterator(); classit.hasNext(); ) {
-      ClassDescriptor cd=(ClassDescriptor)classit.next();
-      Set possiblematches=cd.getMethodTable().getSetFromSameScope(md.getSymbol());
-      for(Iterator matchit=possiblematches.iterator(); matchit.hasNext(); ) {
-	MethodDescriptor matchmd=(MethodDescriptor)matchit.next();
-	if (md.matches(matchmd))
-	  return false;
+      Set subclasses=typeutil.getSubClasses(thiscd);
+      if (subclasses==null)
+        return true;
+      for(Iterator classit=subclasses.iterator(); classit.hasNext(); ) {
+        ClassDescriptor cd=(ClassDescriptor)classit.next();
+        Set possiblematches=cd.getMethodTable().getSetFromSameScope(md.getSymbol());
+        for(Iterator matchit=possiblematches.iterator(); matchit.hasNext(); ) {
+          MethodDescriptor matchmd=(MethodDescriptor)matchit.next();
+          if (md.matches(matchmd))
+            return false;
+        }
       }
     }
-    }
     return true;
   }
 
   protected void generateFlatFieldNode(FlatMethod fm, FlatFieldNode ffn, PrintWriter output) {
-    
+
     if(ffn.getField().isStatic()) {
       // static field
       if((fm.getMethod().isStaticBlock()) || (fm.getMethod().isInvokedByStatic())) {
-	// is a static block or is invoked in some static block
-	ClassDescriptor cd = fm.getMethod().getClassDesc();
-	ClassDescriptor cn = ffn.getSrc().getType().getClassDesc();
-	if(cd == cn) {
-	  // the same class, do nothing
-	} else if(mgcstaticinit) {
-      // generate the static init check code if has not done the static init in main()
-	  if((cn.getNumStaticFields() != 0) || (cn.getNumStaticBlocks() != 0)) {
-	    // need to check if the class' static fields have been initialized and/or
-	    // its static blocks have been executed
-	    output.println("if(global_defsprim_p->" + cn.getSafeSymbol()+"static_block_exe_flag == 0) {");
-	    if(cn.getNumStaticBlocks() != 0) {
-	      MethodDescriptor t_md = (MethodDescriptor)cn.getMethodTable().get("staticblocks");
-          if ((GENERATEPRECISEGC) || (this.state.MULTICOREGC)) {
-            output.print("       struct "+cn.getSafeSymbol()+t_md.getSafeSymbol()+"_"+t_md.getSafeMethodDescriptor()+"_params __parameterlist__={");
-            output.println("0, NULL};");
-            output.println("     "+cn.getSafeSymbol()+t_md.getSafeSymbol()+"_"+t_md.getSafeMethodDescriptor()+"(& __parameterlist__);");
-          } else {
-            output.println("  "+cn.getSafeSymbol()+t_md.getSafeSymbol()+"_"+t_md.getSafeMethodDescriptor()+"();");
+        // is a static block or is invoked in some static block
+        ClassDescriptor cd = fm.getMethod().getClassDesc();
+        ClassDescriptor cn = ffn.getSrc().getType().getClassDesc();
+        if(cd != cn && mgcstaticinit && callgraph.isInit(cn)) {
+          // generate the static init check code if has not done the static init in main()
+          if((cn.getNumStaticFields() != 0) || (cn.getNumStaticBlocks() != 0)) {
+            // need to check if the class' static fields have been initialized and/or
+            // its static blocks have been executed
+            output.println("if(global_defsprim_p->" + cn.getSafeSymbol()+"static_block_exe_flag == 0) {");
+            if(cn.getNumStaticBlocks() != 0) {
+              MethodDescriptor t_md = (MethodDescriptor)cn.getMethodTable().get("staticblocks");
+              if ((GENERATEPRECISEGC) || state.MULTICOREGC||state.PMC) {
+                output.print("       struct "+cn.getSafeSymbol()+t_md.getSafeSymbol()+"_"+t_md.getSafeMethodDescriptor()+"_params __parameterlist__={");
+                output.println("0, NULL};");
+                output.println("     "+cn.getSafeSymbol()+t_md.getSafeSymbol()+"_"+t_md.getSafeMethodDescriptor()+"(& __parameterlist__);");
+              } else {
+                output.println("  "+cn.getSafeSymbol()+t_md.getSafeSymbol()+"_"+t_md.getSafeMethodDescriptor()+"();");
+              }
+            } else {
+              output.println("  global_defsprim_p->" + cn.getSafeSymbol()+"static_block_exe_flag = 1;");
+            }
+            output.println("}");
           }
-	    } else {
-	      output.println("  global_defsprim_p->" + cn.getSafeSymbol()+"static_block_exe_flag = 1;");
-	    }
-	    output.println("}");
-	  }
-	}
+        }
       }
       // redirect to the global_defs_p structure
-	if (ffn.getField().getType().isPtr())
-	  output.println(generateTemp(fm, ffn.getDst())+"=global_defs_p->"+ffn.getField().getSafeSymbol()+";");
-	else
-	  output.println(generateTemp(fm, ffn.getDst())+"=global_defsprim_p->"+ffn.getField().getSafeSymbol()+";");
+      if(state.SSJAVA_GENCODE_PREVENT_CRASHES){
+        if (ffn.getField().getType().isPtr()){
+          output.println("if ( global_defs_p == NULL) {");
+          output.println("printf(\"SSJAVA: Dereferencing NULL Pointer at file:%s, func:%s, line:%d \\n\", __FILE__, __func__, __LINE__);");
+          output.println(generateTemp(fm, ffn.getDst())+"= NULL;");
+        }else{
+          output.println("if ( global_defsprim_p == NULL) {");
+          output.println("printf(\"SSJAVA: Dereferencing NULL Pointer at file:%s, func:%s, line:%d \\n\", __FILE__, __func__, __LINE__);");
+          output.println(generateTemp(fm, ffn.getDst())+"= 0;");
+        }
+        output.println("}else{");
+        if (ffn.getField().getType().isPtr())
+          output.println(generateTemp(fm, ffn.getDst())+"=global_defs_p->"+ffn.getField().getSafeSymbol()+";");
+        else
+          output.println(generateTemp(fm, ffn.getDst())+"=global_defsprim_p->"+ffn.getField().getSafeSymbol()+";");
+        output.println("}");
+      }else{
+        if (ffn.getField().getType().isPtr())
+          output.println(generateTemp(fm, ffn.getDst())+"=global_defs_p->"+ffn.getField().getSafeSymbol()+";");
+        else
+          output.println(generateTemp(fm, ffn.getDst())+"=global_defsprim_p->"+ffn.getField().getSafeSymbol()+";");        
+      }
     } else if (ffn.getField().isEnum()) {
       // an Enum value, directly replace the field access as int
       output.println(generateTemp(fm, ffn.getDst()) + "=" + ffn.getField().enumValue() + ";");
-    } else {
-      output.println("#ifdef MULTICORE_DEBUG");
+    } else if(state.SSJAVA_GENCODE_PREVENT_CRASHES){
       output.println("if (" + generateTemp(fm,ffn.getSrc()) + " == NULL) {");
-      output.println("printf(\" NULL ptr error: %s, %s, %d \\n\", __FILE__, __func__, __LINE__);");
-      if(state.MULTICOREGC) {
-        output.println("failednullptr(&___locals___);");
-      } else {
-        output.println("failednullptr(NULL);");
+      output.println("printf(\"SSJAVA: Dereferencing NULL Pointer at file:%s, func:%s, line:%d \\n\", __FILE__, __func__, __LINE__);");
+      if(ffn.getDst().getType().isPrimitive()){
+        output.println(generateTemp(fm, ffn.getDst())+"= 0;");
+      }else{
+        output.println(generateTemp(fm, ffn.getDst())+"= NULL;");
       }
+      output.println("}else{");
+      output.println(generateTemp(fm, ffn.getDst())+"="+ generateTemp(fm,ffn.getSrc())+"->"+ ffn.getField().getSafeSymbol()+";");
       output.println("}");
-      output.println("#endif //MULTICORE_DEBUG");
+    }else if (ffn.getField().getSymbol().equals("this")) {
+	// an inner class refers to itself
+	if( state.CAPTURE_NULL_DEREFERENCES ) {
+	    output.println("#ifdef CAPTURE_NULL_DEREFERENCES");
+	    output.println("if (" + generateTemp(fm,ffn.getSrc()) + " == NULL) {");
+	    output.println("printf(\" NULL ptr error: %s, %s, %d \\n\", __FILE__, __func__, __LINE__);");
+	    if(state.MULTICOREGC||state.PMC) {
+		output.println("failednullptr(&___locals___);");
+	    } else {
+		output.println("failednullptr(NULL);");
+	    }
+	    output.println("}");
+	    output.println("#endif //CAPTURE_NULL_DEREFERENCES");
+	}
+	output.println(generateTemp(fm, ffn.getDst())+"="+ generateTemp(fm,ffn.getSrc())+";");
+    } else {
+      if( state.CAPTURE_NULL_DEREFERENCES ) {
+        output.println("#ifdef CAPTURE_NULL_DEREFERENCES");
+        output.println("if (" + generateTemp(fm,ffn.getSrc()) + " == NULL) {");
+        output.println("printf(\" NULL ptr error: %s, %s, %d \\n\", __FILE__, __func__, __LINE__);");
+        if(state.MULTICOREGC||state.PMC) {
+          output.println("failednullptr(&___locals___);");
+        } else {
+          output.println("failednullptr(NULL);");
+        }
+        output.println("}");
+        output.println("#endif //CAPTURE_NULL_DEREFERENCES");
+      }
       output.println(generateTemp(fm, ffn.getDst())+"="+ generateTemp(fm,ffn.getSrc())+"->"+ ffn.getField().getSafeSymbol()+";");
     }
   }
@@ -2611,10 +2879,10 @@ public class BuildCode {
       String dst=generateTemp(fm, fsfn.getDst());
       output.println("if(!"+dst+"->"+localcopystr+") {");
       /* Link object into list */
-      if (GENERATEPRECISEGC || this.state.MULTICOREGC)
-	output.println("COPY_OBJ((struct garbagelist *)"+localsprefixaddr+",(struct ___Object___ *)"+dst+");");
+      if (GENERATEPRECISEGC || state.MULTICOREGC||state.PMC)
+        output.println("COPY_OBJ((struct garbagelist *)"+localsprefixaddr+",(struct ___Object___ *)"+dst+");");
       else
-	output.println("COPY_OBJ("+dst+");");
+        output.println("COPY_OBJ("+dst+");");
       output.println(dst+"->"+nextobjstr+"="+fcrevert+";");
       output.println(fcrevert+"=(struct ___Object___ *)"+dst+";");
       output.println("}");
@@ -2623,59 +2891,96 @@ public class BuildCode {
     if(fsfn.getField().isStatic()) {
       // static field
       if((fm.getMethod().isStaticBlock()) || (fm.getMethod().isInvokedByStatic())) {
-	// is a static block or is invoked in some static block
-	ClassDescriptor cd = fm.getMethod().getClassDesc();
-	ClassDescriptor cn = fsfn.getDst().getType().getClassDesc();
-	if(cd != cn && mgcstaticinit){
-	  // generate static init check code if has not done the static init in main()
-	  if((cn.getNumStaticFields() != 0) || (cn.getNumStaticBlocks() != 0)) {
-	    // need to check if the class' static fields have been initialized and/or
-	    // its static blocks have been executed
-	    output.println("if(global_defsprim_p->" + cn.getSafeSymbol()+"static_block_exe_flag == 0) {");
-	    if(cn.getNumStaticBlocks() != 0) {
-	      MethodDescriptor t_md = (MethodDescriptor)cn.getMethodTable().get("staticblocks");
-	      if ((GENERATEPRECISEGC) || (this.state.MULTICOREGC)) {
-		output.print("       struct "+cn.getSafeSymbol()+t_md.getSafeSymbol()+"_"+t_md.getSafeMethodDescriptor()+"_params __parameterlist__={");
-		output.println("0, NULL};");
-		output.println("     "+cn.getSafeSymbol()+t_md.getSafeSymbol()+"_"+t_md.getSafeMethodDescriptor()+"(& __parameterlist__);");
-	      } else {
-		output.println("  "+cn.getSafeSymbol()+t_md.getSafeSymbol()+"_"+t_md.getSafeMethodDescriptor()+"();");
-	      }
-	    } else {
-	      output.println("  global_defsprim_p->" + cn.getSafeSymbol()+"static_block_exe_flag = 1;");
-	    }
-	    output.println("}");
-	  }
-	}
+        // is a static block or is invoked in some static block
+        ClassDescriptor cd = fm.getMethod().getClassDesc();
+        ClassDescriptor cn = fsfn.getDst().getType().getClassDesc();
+        if(cd != cn && mgcstaticinit && callgraph.isInit(cn)) {
+          // generate static init check code if has not done the static init in main()
+          if((cn.getNumStaticFields() != 0) || (cn.getNumStaticBlocks() != 0)) {
+            // need to check if the class' static fields have been initialized and/or
+            // its static blocks have been executed
+            output.println("if(global_defsprim_p->" + cn.getSafeSymbol()+"static_block_exe_flag == 0) {");
+            if(cn.getNumStaticBlocks() != 0) {
+              MethodDescriptor t_md = (MethodDescriptor)cn.getMethodTable().get("staticblocks");
+              if ((GENERATEPRECISEGC) || state.MULTICOREGC||state.PMC) {
+                output.print("       struct "+cn.getSafeSymbol()+t_md.getSafeSymbol()+"_"+t_md.getSafeMethodDescriptor()+"_params __parameterlist__={");
+                output.println("0, NULL};");
+                output.println("     "+cn.getSafeSymbol()+t_md.getSafeSymbol()+"_"+t_md.getSafeMethodDescriptor()+"(& __parameterlist__);");
+              } else {
+                output.println("  "+cn.getSafeSymbol()+t_md.getSafeSymbol()+"_"+t_md.getSafeMethodDescriptor()+"();");
+              }
+            } else {
+              output.println("  global_defsprim_p->" + cn.getSafeSymbol()+"static_block_exe_flag = 1;");
+            }
+            output.println("}");
+          }
+        }
       }
       // redirect to the global_defs_p structure
-      if (fsfn.getField().getType().isPtr()) {
-	if (fsfn.getField().getType()!=fsfn.getSrc().getType())
-	  output.println("global_defs_p->" +
-			 fsfn.getField().getSafeSymbol()+"=(struct "+ fsfn.getField().getType().getSafeSymbol()+" *)"+generateTemp(fm,fsfn.getSrc())+";");
-	else
-	  output.println("global_defs_p->" +
-			 fsfn.getField().getSafeSymbol()+"="+ generateTemp(fm,fsfn.getSrc())+";");
-      } else
-	output.println("global_defsprim_p->" +
-		       fsfn.getField().getSafeSymbol()+"="+ generateTemp(fm,fsfn.getSrc())+";");
-    } else {
-      output.println("#ifdef MULTICORE_DEBUG");
-      output.println("if (" + generateTemp(fm,fsfn.getDst()) + " == NULL) {");
-      output.println("printf(\" NULL ptr error: %s, %s, %d \\n\", __FILE__, __func__, __LINE__);");
-      if(state.MULTICOREGC) {
-        output.println("failednullptr(&___locals___);");
-      } else {
-        output.println("failednullptr(NULL);");
+      if(state.SSJAVA_GENCODE_PREVENT_CRASHES){
+        if (fsfn.getField().getType().isPtr()) {
+          output.println("if ( global_defs_p == NULL) {");
+          output.println("printf(\"SSJAVA: Discard a write due to dereferencing NULL Pointer at file:%s, func:%s, line:%d \\n\", __FILE__, __func__, __LINE__);");
+          output.println("}else{");
+          if (fsfn.getField().getType()!=fsfn.getSrc().getType()){
+            output.println("global_defs_p->" +
+                           fsfn.getField().getSafeSymbol()+"=(struct "+ fsfn.getField().getType().getSafeSymbol()+" *)"+generateTemp(fm,fsfn.getSrc())+";");
+          }else{
+            output.println("global_defs_p->" +
+                           fsfn.getField().getSafeSymbol()+"="+ generateTemp(fm,fsfn.getSrc())+";");
+          }
+          output.println("}");
+        } else{
+          output.println("if ( global_defsprim_p == NULL) {");
+          output.println("printf(\"SSJAVA: Discard a write due to dereferencing NULL Pointer at file:%s, func:%s, line:%d \\n\", __FILE__, __func__, __LINE__);");
+          output.println("}else{");
+          output.println("global_defsprim_p->" +
+                         fsfn.getField().getSafeSymbol()+"="+ generateTemp(fm,fsfn.getSrc())+";");
+          output.println("}");
+        }
+      }else{
+        if (fsfn.getField().getType().isPtr()) {
+          if (fsfn.getField().getType()!=fsfn.getSrc().getType())
+            output.println("global_defs_p->" +
+                           fsfn.getField().getSafeSymbol()+"=(struct "+ fsfn.getField().getType().getSafeSymbol()+" *)"+generateTemp(fm,fsfn.getSrc())+";");
+          else
+            output.println("global_defs_p->" +
+                           fsfn.getField().getSafeSymbol()+"="+ generateTemp(fm,fsfn.getSrc())+";");
+        } else
+          output.println("global_defsprim_p->" +
+                         fsfn.getField().getSafeSymbol()+"="+ generateTemp(fm,fsfn.getSrc())+";");
       }
+    } else if(state.SSJAVA_GENCODE_PREVENT_CRASHES){
+      output.println("if (" + generateTemp(fm,fsfn.getDst()) + " == NULL) {");
+      output.println("printf(\"SSJAVA: Dereferencing NULL Pointer at file:%s, func:%s, line:%d \\n\", __FILE__, __func__, __LINE__);");
+      output.println("}else{");
+      if (fsfn.getSrc().getType().isPtr()&&fsfn.getSrc().getType()!=fsfn.getField().getType())
+        output.println(generateTemp(fm, fsfn.getDst())+"->"+
+                       fsfn.getField().getSafeSymbol()+"=(struct "+ fsfn.getField().getType().getSafeSymbol()+"*)"+generateTemp(fm,fsfn.getSrc())+";");
+      else
+        output.println(generateTemp(fm, fsfn.getDst())+"->"+
+                       fsfn.getField().getSafeSymbol()+"="+ generateTemp(fm,fsfn.getSrc())+";");
       output.println("}");
-      output.println("#endif //MULTICORE_DEBUG");
+    } else {
+      if( state.CAPTURE_NULL_DEREFERENCES ) {
+        output.println("#ifdef CAPTURE_NULL_DEREFERENCES");
+        output.println("if (" + generateTemp(fm,fsfn.getDst()) + " == NULL) {");
+        output.println("printf(\" NULL ptr error: %s, %s, %d \\n\", __FILE__, __func__, __LINE__);");
+        if(state.MULTICOREGC||state.PMC) {
+          output.println("failednullptr(&___locals___);");
+        } else {
+          output.println("failednullptr(NULL);");
+        }
+        output.println("}");
+        output.println("#endif //CAPTURE_NULL_DEREFERENCES");
+      }
+
       if (fsfn.getSrc().getType().isPtr()&&fsfn.getSrc().getType()!=fsfn.getField().getType())
-	output.println(generateTemp(fm, fsfn.getDst())+"->"+
-		       fsfn.getField().getSafeSymbol()+"=(struct "+ fsfn.getField().getType().getSafeSymbol()+"*)"+generateTemp(fm,fsfn.getSrc())+";");
+        output.println(generateTemp(fm, fsfn.getDst())+"->"+
+                       fsfn.getField().getSafeSymbol()+"=(struct "+ fsfn.getField().getType().getSafeSymbol()+"*)"+generateTemp(fm,fsfn.getSrc())+";");
       else
-	output.println(generateTemp(fm, fsfn.getDst())+"->"+
-		       fsfn.getField().getSafeSymbol()+"="+ generateTemp(fm,fsfn.getSrc())+";");
+        output.println(generateTemp(fm, fsfn.getDst())+"->"+
+                       fsfn.getField().getSafeSymbol()+"="+ generateTemp(fm,fsfn.getSrc())+";");
     }
   }
 
@@ -2690,12 +2995,31 @@ public class BuildCode {
       type="void *";
     else
       type=elementtype.getSafeSymbol()+" ";
-
-    if (this.state.ARRAYBOUNDARYCHECK && fen.needsBoundsCheck()) {
-      output.println("if (unlikely(((unsigned int)"+generateTemp(fm, fen.getIndex())+") >= "+generateTemp(fm,fen.getSrc()) + "->___length___))");
-      output.println("failedboundschk(" + (boundschknum++) + ");");
+    
+    if(state.SSJAVA_GENCODE_PREVENT_CRASHES){
+      output.println("if (" + generateTemp(fm,fen.getSrc())  + " == NULL) {");
+      output.println("printf(\"SSJAVA: Dereferencing NULL Pointer at file:%s, func:%s, line:%d \\n\", __FILE__, __func__, __LINE__);");
+      output.println("}else{");
+      output.println("if (unlikely( ((unsigned int)"+generateTemp(fm, fen.getIndex())+") >= "+generateTemp(fm,fen.getSrc()) + "->___length___)){");
+      output.println("printf(\"SSJAVA: Array out of bounds at file:%s, func:%s, line:%d \\n\", __FILE__, __func__, __LINE__);");
+      if(fen.getDst().getType().isPrimitive()){
+        output.println(generateTemp(fm, fen.getDst())+"= 0;");  
+      }else{
+        output.println(generateTemp(fm, fen.getDst())+"= NULL;");
+      }
+      output.println("}else{");
+      output.println(generateTemp(fm, fen.getDst())+"=(("+ type+"*)(((char *) &("+ generateTemp(fm,fen.getSrc())+"->___length___))+sizeof(int)))["+generateTemp(fm, fen.getIndex())+"];");
+      output.println("}");
+      output.println("}");
+    }else{
+      if (this.state.ARRAYBOUNDARYCHECK && fen.needsBoundsCheck()) {
+        output.println("if (unlikely(((unsigned int)"+generateTemp(fm, fen.getIndex())+") >= "+generateTemp(fm,fen.getSrc()) + "->___length___))");
+        output.println("failedboundschk(__LINE__, " +generateTemp(fm, fen.getIndex()) +", "+ generateTemp(fm, fen.getSrc()) + ");");
+      }
+      output.println(generateTemp(fm, fen.getDst())+"=(("+ type+"*)(((char *) &("+ generateTemp(fm,fen.getSrc())+"->___length___))+sizeof(int)))["+generateTemp(fm, fen.getIndex())+"];");
     }
-    output.println(generateTemp(fm, fen.getDst())+"=(("+ type+"*)(((char *) &("+ generateTemp(fm,fen.getSrc())+"->___length___))+sizeof(int)))["+generateTemp(fm, fen.getIndex())+"];");
+
+
   }
 
   protected void generateFlatSetElementNode(FlatMethod fm, FlatSetElementNode fsen, PrintWriter output) {
@@ -2711,52 +3035,69 @@ public class BuildCode {
       type="void *";
     else
       type=elementtype.getSafeSymbol()+" ";
-
-    if (this.state.ARRAYBOUNDARYCHECK && fsen.needsBoundsCheck()) {
-      output.println("if (unlikely(((unsigned int)"+generateTemp(fm, fsen.getIndex())+") >= "+generateTemp(fm,fsen.getDst()) + "->___length___))");
-      output.println("failedboundschk(" + (boundschknum++) + ");");
-    }
-    if (state.FASTCHECK) {
-      String dst=generateTemp(fm, fsen.getDst());
-      output.println("if(!"+dst+"->"+localcopystr+") {");
-      /* Link object into list */
-      if (GENERATEPRECISEGC || this.state.MULTICOREGC)
-	output.println("COPY_OBJ((struct garbagelist *)"+localsprefixaddr+",(struct ___Object___ *)"+dst+");");
-      else
-	output.println("COPY_OBJ("+dst+");");
-      output.println(dst+"->"+nextobjstr+"="+fcrevert+";");
-      output.println(fcrevert+"=(struct ___Object___ *)"+dst+";");
+    
+    if(state.SSJAVA_GENCODE_PREVENT_CRASHES){
+      output.println("if ("+generateTemp(fm,fsen.getDst())+"==NULL){");
+      output.println("printf(\"SSJAVA: Dereferencing NULL Pointer at file:%s, func:%s, line:%d \\n\", __FILE__, __func__, __LINE__);");
+      output.println("}else{");
+      output.println("if (unlikely(((unsigned int)"+generateTemp(fm, fsen.getIndex())+") >= "+generateTemp(fm,fsen.getDst()) + "->___length___)){");
+      output.println("printf(\"SSJAVA: Discard a write due to array out of bounds at file:%s, func:%s, line:%d \\n\", __FILE__, __func__, __LINE__);");
+      output.println("}else{");
+      output.println("(("+type +"*)(((char *) &("+ generateTemp(fm,fsen.getDst())+"->___length___))+sizeof(int)))["+generateTemp(fm, fsen.getIndex())+"]="+generateTemp(fm,fsen.getSrc())+";");
+      output.println("}");
       output.println("}");
+    }else{
+      if (this.state.ARRAYBOUNDARYCHECK && fsen.needsBoundsCheck()) {
+        output.println("if (unlikely(((unsigned int)"+generateTemp(fm, fsen.getIndex())+") >= "+generateTemp(fm,fsen.getDst()) + "->___length___))");
+        output.println("failedboundschk(__LINE__, " +generateTemp(fm, fsen.getIndex()) +", "+ generateTemp(fm, fsen.getDst()) + ");");
+      }
+      if (state.FASTCHECK) {
+        String dst=generateTemp(fm, fsen.getDst());
+        output.println("if(!"+dst+"->"+localcopystr+") {");
+        /* Link object into list */
+        if (GENERATEPRECISEGC || state.MULTICOREGC||state.PMC)
+          output.println("COPY_OBJ((struct garbagelist *)"+localsprefixaddr+",(struct ___Object___ *)"+dst+");");
+        else
+          output.println("COPY_OBJ("+dst+");");
+        output.println(dst+"->"+nextobjstr+"="+fcrevert+";");
+        output.println(fcrevert+"=(struct ___Object___ *)"+dst+";");
+        output.println("}");
+      }
+      output.println("(("+type +"*)(((char *) &("+ generateTemp(fm,fsen.getDst())+"->___length___))+sizeof(int)))["+generateTemp(fm, fsen.getIndex())+"]="+generateTemp(fm,fsen.getSrc())+";");
     }
-    output.println("(("+type +"*)(((char *) &("+ generateTemp(fm,fsen.getDst())+"->___length___))+sizeof(int)))["+generateTemp(fm, fsen.getIndex())+"]="+generateTemp(fm,fsen.getSrc())+";");
+
   }
 
 
   protected void generateFlatNew(FlatMethod fm, FlatNew fn, PrintWriter output) {
+    String dst=generateTemp(fm,fn.getDst());
+
     if (fn.getType().isArray()) {
       int arrayid=state.getArrayNumber(fn.getType())+state.numClasses();
-      if ((GENERATEPRECISEGC) || (this.state.MULTICOREGC)) {
-	output.println(generateTemp(fm,fn.getDst())+"=allocate_newarray("+localsprefixaddr+", "+arrayid+", "+generateTemp(fm, fn.getSize())+");");
+      if ((GENERATEPRECISEGC) || state.MULTICOREGC||state.PMC) {
+        output.println(generateTemp(fm,fn.getDst())+"=allocate_newarray("+localsprefixaddr+", "+arrayid+", "+generateTemp(fm, fn.getSize())+");");
       } else {
-	output.println(generateTemp(fm,fn.getDst())+"=allocate_newarray("+arrayid+", "+generateTemp(fm, fn.getSize())+");");
+        output.println(generateTemp(fm,fn.getDst())+"=allocate_newarray("+arrayid+", "+generateTemp(fm, fn.getSize())+");");
       }
     } else {
-      if ((GENERATEPRECISEGC) || (this.state.MULTICOREGC)) {
-	output.println(generateTemp(fm,fn.getDst())+"=allocate_new("+localsprefixaddr+", "+fn.getType().getClassDesc().getId()+");");
+      if ((GENERATEPRECISEGC) || state.MULTICOREGC||state.PMC) {
+        output.println(generateTemp(fm,fn.getDst())+"=allocate_new("+localsprefixaddr+", "+fn.getType().getClassDesc().getId()+");");
       } else {
-	output.println(generateTemp(fm,fn.getDst())+"=allocate_new("+fn.getType().getClassDesc().getId()+");");
+        output.println(generateTemp(fm,fn.getDst())+"=allocate_new("+fn.getType().getClassDesc().getId()+");");
       }
     }
     if (state.FASTCHECK) {
-      String dst=generateTemp(fm,fn.getDst());
       output.println(dst+"->___localcopy___=(struct ___Object___*)1;");
       output.println(dst+"->"+nextobjstr+"="+fcrevert+";");
       output.println(fcrevert+"=(struct ___Object___ *)"+dst+";");
     }
+    for(BuildCodeExtension bcx: extensions) {
+      bcx.additionalCodeNewObject(output, dst, fn);
+    }
   }
 
   protected void generateFlatTagDeclaration(FlatMethod fm, FlatTagDeclaration fn, PrintWriter output) {
-    if ((GENERATEPRECISEGC) || (this.state.MULTICOREGC)) {
+    if ((GENERATEPRECISEGC) || state.MULTICOREGC||state.PMC) {
       output.println(generateTemp(fm,fn.getDst())+"=allocate_tag("+localsprefixaddr+", "+state.getTagId(fn.getType())+");");
     } else {
       output.println(generateTemp(fm,fn.getDst())+"=allocate_tag("+state.getTagId(fn.getType())+");");
@@ -2766,22 +3107,31 @@ public class BuildCode {
   protected void generateFlatOpNode(FlatMethod fm, FlatOpNode fon, PrintWriter output) {
     if (fon.getRight()!=null) {
       if (fon.getOp().getOp()==Operation.URIGHTSHIFT) {
-	if (fon.getLeft().getType().isLong())
-	  output.println(generateTemp(fm, fon.getDest())+" = ((unsigned long long)"+generateTemp(fm, fon.getLeft())+")>>"+generateTemp(fm,fon.getRight())+";");
-	else
-	  output.println(generateTemp(fm, fon.getDest())+" = ((unsigned int)"+generateTemp(fm, fon.getLeft())+")>>"+generateTemp(fm,fon.getRight())+";");
+        if (fon.getLeft().getType().isLong())
+          output.println(generateTemp(fm, fon.getDest())+" = ((unsigned long long)"+generateTemp(fm, fon.getLeft())+")>>"+generateTemp(fm,fon.getRight())+";");
+        else
+          output.println(generateTemp(fm, fon.getDest())+" = ((unsigned int)"+generateTemp(fm, fon.getLeft())+")>>"+generateTemp(fm,fon.getRight())+";");
 
       } else {
-	if (fon.getLeft().getType().isPtr()&&fon.getLeft().getType()!=fon.getRight().getType()&&!fon.getRight().getType().isNull())
-	  output.println(generateTemp(fm, fon.getDest())+" = (struct "+fon.getRight().getType().getSafeSymbol()+"*)"+generateTemp(fm, fon.getLeft())+fon.getOp().toString()+generateTemp(fm,fon.getRight())+";");
-	else
-	  output.println(generateTemp(fm, fon.getDest())+" = "+generateTemp(fm, fon.getLeft())+fon.getOp().toString()+generateTemp(fm,fon.getRight())+";");
+        if(state.SSJAVA_GENCODE_PREVENT_CRASHES && fon.getOp().getOp()==Operation.DIV){
+          output.println("if (unlikely("+generateTemp(fm,fon.getRight())+"==0)){");
+          output.println("printf(\"SSJAVA: Divided by zero at file:%s, func:%s, line:%d \\n\", __FILE__, __func__, __LINE__);");
+          output.println(generateTemp(fm, fon.getDest())+" = 0;");
+          output.println("}else{");
+          output.println(generateTemp(fm, fon.getDest())+" = "+generateTemp(fm, fon.getLeft())+fon.getOp().toString()+generateTemp(fm,fon.getRight())+";");
+          output.println("}");          
+        }else{
+          if (fon.getLeft().getType().isPtr()&&fon.getLeft().getType()!=fon.getRight().getType()&&!fon.getRight().getType().isNull())
+            output.println(generateTemp(fm, fon.getDest())+" = (struct "+fon.getRight().getType().getSafeSymbol()+"*)"+generateTemp(fm, fon.getLeft())+fon.getOp().toString()+generateTemp(fm,fon.getRight())+";");
+          else
+            output.println(generateTemp(fm, fon.getDest())+" = "+generateTemp(fm, fon.getLeft())+fon.getOp().toString()+generateTemp(fm,fon.getRight())+";");
+        }
       }
     } else if (fon.getOp().getOp()==Operation.ASSIGN)
       if (fon.getDest().getType().isPtr()&&fon.getDest().getType()!=fon.getLeft().getType())
-	output.println(generateTemp(fm, fon.getDest())+" = (struct "+fon.getDest().getType().getSafeSymbol()+"*)"+generateTemp(fm, fon.getLeft())+";");
+        output.println(generateTemp(fm, fon.getDest())+" = (struct "+fon.getDest().getType().getSafeSymbol()+"*)"+generateTemp(fm, fon.getLeft())+";");
       else
-	output.println(generateTemp(fm, fon.getDest())+" = "+generateTemp(fm, fon.getLeft())+";");
+        output.println(generateTemp(fm, fon.getDest())+" = "+generateTemp(fm, fon.getLeft())+";");
     else if (fon.getOp().getOp()==Operation.UNARYPLUS)
       output.println(generateTemp(fm, fon.getDest())+" = "+generateTemp(fm, fon.getLeft())+";");
     else if (fon.getOp().getOp()==Operation.UNARYMINUS)
@@ -2817,24 +3167,29 @@ public class BuildCode {
       String str=(String)fln.getValue();
       output.println("{");
       output.print("short str"+flncount+"[]={");
-      for(int i=0;i<str.length();i++) {
-	if (i!=0)
-	  output.print(", ");
-	output.print(((int)str.charAt(i)));
+      for(int i=0; i<str.length(); i++) {
+        if (i!=0)
+          output.print(", ");
+        output.print(((int)str.charAt(i)));
       }
       output.println("};");
-      if ((GENERATEPRECISEGC) || (this.state.MULTICOREGC)) {
-	output.println(generateTemp(fm, fln.getDst())+"=NewStringShort("+localsprefixaddr+", str"+flncount+", "+((String)fln.getValue()).length()+");");
+      if ((GENERATEPRECISEGC) || state.MULTICOREGC||state.PMC) {
+        output.println(generateTemp(fm, fln.getDst())+"=NewStringShort("+localsprefixaddr+", str"+flncount+", "+((String)fln.getValue()).length()+");");
       } else {
-	output.println(generateTemp(fm, fln.getDst())+"=NewStringShort(str"+flncount+" ,"+((String)fln.getValue()).length()+");");
+        output.println(generateTemp(fm, fln.getDst())+"=NewStringShort(str"+flncount+" ,"+((String)fln.getValue()).length()+");");
       }
+      
+      for(BuildCodeExtension bcx: extensions) {
+        bcx.additionalCodeNewStringLiteral(output, generateTemp(fm, fln.getDst()));
+      }      
+
       output.println("}");
       flncount++;
     } else if (fln.getType().isBoolean()) {
       if (((Boolean)fln.getValue()).booleanValue())
-	output.println(generateTemp(fm, fln.getDst())+"=1;");
+        output.println(generateTemp(fm, fln.getDst())+"=1;");
       else
-	output.println(generateTemp(fm, fln.getDst())+"=0;");
+        output.println(generateTemp(fm, fln.getDst())+"=0;");
     } else if (fln.getType().isChar()) {
       int val=(int)(((Character)fln.getValue()).charValue());
       output.println(generateTemp(fm, fln.getDst())+"="+val+";");
@@ -2850,12 +3205,12 @@ public class BuildCode {
       output.println("  global_defsprim_p->" + fm.getMethod().getClassDesc().getSafeSymbol()+"static_block_exe_flag = 1;");
       output.println("");
     }
-    
+
     if (frn.getReturnTemp()!=null) {
       if (frn.getReturnTemp().getType().isPtr())
-	output.println("return (struct "+fm.getMethod().getReturnType().getSafeSymbol()+"*)"+generateTemp(fm, frn.getReturnTemp())+";");
+        output.println("return (struct "+fm.getMethod().getReturnType().getSafeSymbol()+"*)"+generateTemp(fm, frn.getReturnTemp())+";");
       else
-	output.println("return "+generateTemp(fm, frn.getReturnTemp())+";");
+        output.println("return "+generateTemp(fm, frn.getReturnTemp())+";");
     } else {
       output.println("return;");
     }
@@ -2880,17 +3235,17 @@ public class BuildCode {
       md=(MethodDescriptor) des;
     else
       task=(TaskDescriptor) des;
-    String mdstring = md != null ? md.getSafeMethodDescriptor() : null;
+    String mdstring = md != null?md.getSafeMethodDescriptor():null;
 
-    ClassDescriptor cn=md!=null ? md.getClassDesc() : null;
+    ClassDescriptor cn=md!=null?md.getClassDesc():null;
 
     if (md!=null&&md.getReturnType()!=null) {
       if (md.getReturnType().isClass() && md.getReturnType().getClassDesc().isEnum()) {
-	output.print("int ");
+        output.print("int ");
       } else if (md.getReturnType().isClass()||md.getReturnType().isArray())
-	output.print("struct " + md.getReturnType().getSafeSymbol()+" * ");
+        output.print("struct " + md.getReturnType().getSafeSymbol()+" * ");
       else
-	output.print(md.getReturnType().getSafeSymbol()+" ");
+        output.print(md.getReturnType().getSafeSymbol()+" ");
     } else
       //catch the constructor case
       output.print("void ");
@@ -2903,49 +3258,49 @@ public class BuildCode {
       output.print(task.getSafeSymbol()+"(");
 
     boolean printcomma=false;
-    if ((GENERATEPRECISEGC) || (this.state.MULTICOREGC)) {
+    if ((GENERATEPRECISEGC) || state.MULTICOREGC||state.PMC) {
       if (md!=null) {
-	output.print("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+mdstring+"_params * "+paramsprefix);
+        output.print("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+mdstring+"_params * "+paramsprefix);
       } else
-	output.print("struct "+task.getSafeSymbol()+"_params * "+paramsprefix);
+        output.print("struct "+task.getSafeSymbol()+"_params * "+paramsprefix);
       printcomma=true;
     }
 
     if (md!=null) {
       /* Method */
       for(int i=0; i<objectparams.numPrimitives(); i++) {
-	TempDescriptor temp=objectparams.getPrimitive(i);
-	if (printcomma)
-	  output.print(", ");
-	printcomma=true;
-	if(temp.getType().isClass() && temp.getType().getClassDesc().isEnum()) {
-	  output.print("int " + temp.getSafeSymbol());
-	} else if (temp.getType().isClass()||temp.getType().isArray())
-	  output.print("struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol());
-	else
-	  output.print(temp.getType().getSafeSymbol()+" "+temp.getSafeSymbol());
+        TempDescriptor temp=objectparams.getPrimitive(i);
+        if (printcomma)
+          output.print(", ");
+        printcomma=true;
+        if(temp.getType().isClass() && temp.getType().getClassDesc().isEnum()) {
+          output.print("int " + temp.getSafeSymbol());
+        } else if (temp.getType().isClass()||temp.getType().isArray())
+          output.print("struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol());
+        else
+          output.print(temp.getType().getSafeSymbol()+" "+temp.getSafeSymbol());
       }
       output.println(") {");
-    } else if (!GENERATEPRECISEGC && !this.state.MULTICOREGC) {
+    } else if (!GENERATEPRECISEGC && !state.MULTICOREGC && ! state.PMC) {
       /* Imprecise Task */
       output.println("void * parameterarray[]) {");
       /* Unpack variables */
       for(int i=0; i<objectparams.numPrimitives(); i++) {
-	TempDescriptor temp=objectparams.getPrimitive(i);
-	if(temp.getType().isClass() && temp.getType().getClassDesc().isEnum()) {
-	  output.print("int " + temp.getSafeSymbol() + "=parameterarray["+i+"];");
-	} else {
-	  output.println("struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+"=parameterarray["+i+"];");
-	}
+        TempDescriptor temp=objectparams.getPrimitive(i);
+        if(temp.getType().isClass() && temp.getType().getClassDesc().isEnum()) {
+          output.print("int " + temp.getSafeSymbol() + "=parameterarray["+i+"];");
+        } else {
+          output.println("struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+"=parameterarray["+i+"];");
+        }
       }
       for(int i=0; i<fm.numTags(); i++) {
-	TempDescriptor temp=fm.getTag(i);
-	int offset=i+objectparams.numPrimitives();
-	output.println("struct ___TagDescriptor___ * "+temp.getSafeSymbol()+"=parameterarray["+offset+"];");
+        TempDescriptor temp=fm.getTag(i);
+        int offset=i+objectparams.numPrimitives();
+        output.println("struct ___TagDescriptor___ * "+temp.getSafeSymbol()+"=parameterarray["+offset+"];");
       }
 
       if ((objectparams.numPrimitives()+fm.numTags())>maxtaskparams)
-	maxtaskparams=objectparams.numPrimitives()+fm.numTags();
+        maxtaskparams=objectparams.numPrimitives()+fm.numTags();
     } else output.println(") {");
   }
 
@@ -2965,9 +3320,9 @@ public class BuildCode {
       TempDescriptor tagtmp=ttp.getTagTemp();
       boolean tagstatus=ffan.getTagChange(ttp);
       if (tagstatus) {
-	tagsettable.put(objtmp, tagtmp);
+        tagsettable.put(objtmp, tagtmp);
       } else {
-	tagcleartable.put(objtmp, tagtmp);
+        tagcleartable.put(objtmp, tagtmp);
       }
     }
 
@@ -2983,30 +3338,30 @@ public class BuildCode {
       Hashtable flagtable=(Hashtable)flagorder.get(temp.getType().getClassDesc());
       FlagDescriptor flag=tfp.getFlag();
       if (flag==null) {
-	//Newly allocate objects that don't set any flags case
-	if (flagortable.containsKey(temp)) {
-	  throw new Error();
-	}
-	int mask=0;
-	flagortable.put(temp,new Integer(mask));
+        //Newly allocate objects that don't set any flags case
+        if (flagortable.containsKey(temp)) {
+          throw new Error();
+        }
+        int mask=0;
+        flagortable.put(temp,new Integer(mask));
       } else {
-	int flagid=1<<((Integer)flagtable.get(flag)).intValue();
-	boolean flagstatus=ffan.getFlagChange(tfp);
-	if (flagstatus) {
-	  int mask=0;
-	  if (flagortable.containsKey(temp)) {
-	    mask=((Integer)flagortable.get(temp)).intValue();
-	  }
-	  mask|=flagid;
-	  flagortable.put(temp,new Integer(mask));
-	} else {
-	  int mask=0xFFFFFFFF;
-	  if (flagandtable.containsKey(temp)) {
-	    mask=((Integer)flagandtable.get(temp)).intValue();
-	  }
-	  mask&=(0xFFFFFFFF^flagid);
-	  flagandtable.put(temp,new Integer(mask));
-	}
+        int flagid=1<<((Integer)flagtable.get(flag)).intValue();
+        boolean flagstatus=ffan.getFlagChange(tfp);
+        if (flagstatus) {
+          int mask=0;
+          if (flagortable.containsKey(temp)) {
+            mask=((Integer)flagortable.get(temp)).intValue();
+          }
+          mask|=flagid;
+          flagortable.put(temp,new Integer(mask));
+        } else {
+          int mask=0xFFFFFFFF;
+          if (flagandtable.containsKey(temp)) {
+            mask=((Integer)flagandtable.get(temp)).intValue();
+          }
+          mask&=(0xFFFFFFFF^flagid);
+          flagandtable.put(temp,new Integer(mask));
+        }
       }
     }
 
@@ -3024,35 +3379,35 @@ public class BuildCode {
 
       Set tagtmps=tagcleartable.get(temp);
       if (tagtmps!=null) {
-	Iterator tagit=tagtmps.iterator();
-	while(tagit.hasNext()) {
-	  TempDescriptor tagtmp=(TempDescriptor)tagit.next();
-	  if ((GENERATEPRECISEGC) || (this.state.MULTICOREGC))
-	    output.println("tagclear("+localsprefixaddr+", (struct ___Object___ *)"+generateTemp(fm, temp)+", "+generateTemp(fm,tagtmp)+");");
-	  else
-	    output.println("tagclear((struct ___Object___ *)"+generateTemp(fm, temp)+", "+generateTemp(fm,tagtmp)+");");
-	}
+        Iterator tagit=tagtmps.iterator();
+        while(tagit.hasNext()) {
+          TempDescriptor tagtmp=(TempDescriptor)tagit.next();
+          if ((GENERATEPRECISEGC) || state.MULTICOREGC||state.PMC)
+            output.println("tagclear("+localsprefixaddr+", (struct ___Object___ *)"+generateTemp(fm, temp)+", "+generateTemp(fm,tagtmp)+");");
+          else
+            output.println("tagclear((struct ___Object___ *)"+generateTemp(fm, temp)+", "+generateTemp(fm,tagtmp)+");");
+        }
       }
 
       tagtmps=tagsettable.get(temp);
       if (tagtmps!=null) {
-	Iterator tagit=tagtmps.iterator();
-	while(tagit.hasNext()) {
-	  TempDescriptor tagtmp=(TempDescriptor)tagit.next();
-	  if ((GENERATEPRECISEGC) || (this.state.MULTICOREGC))
-	    output.println("tagset("+localsprefixaddr+", (struct ___Object___ *)"+generateTemp(fm, temp)+", "+generateTemp(fm,tagtmp)+");");
-	  else
-	    output.println("tagset((struct ___Object___ *)"+generateTemp(fm, temp)+", "+generateTemp(fm,tagtmp)+");");
-	}
+        Iterator tagit=tagtmps.iterator();
+        while(tagit.hasNext()) {
+          TempDescriptor tagtmp=(TempDescriptor)tagit.next();
+          if ((GENERATEPRECISEGC) || state.MULTICOREGC||state.PMC)
+            output.println("tagset("+localsprefixaddr+", (struct ___Object___ *)"+generateTemp(fm, temp)+", "+generateTemp(fm,tagtmp)+");");
+          else
+            output.println("tagset((struct ___Object___ *)"+generateTemp(fm, temp)+", "+generateTemp(fm,tagtmp)+");");
+        }
       }
 
       int ormask=0;
       int andmask=0xFFFFFFF;
 
       if (flagortable.containsKey(temp))
-	ormask=((Integer)flagortable.get(temp)).intValue();
+        ormask=((Integer)flagortable.get(temp)).intValue();
       if (flagandtable.containsKey(temp))
-	andmask=((Integer)flagandtable.get(temp)).intValue();
+        andmask=((Integer)flagandtable.get(temp)).intValue();
       generateFlagOrAnd(ffan, fm, temp, output, ormask, andmask);
       generateObjectDistribute(ffan, fm, temp, output);
     }
@@ -3148,33 +3503,33 @@ public class BuildCode {
       output.println("int predicateflags_"+predicateindex+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"[]={");
       int numberterms=0;
       if (fen_hashset!=null) {
-	for (Iterator fen_it = fen_hashset.iterator(); fen_it.hasNext(); ) {
-	  FlagExpressionNode fen = (FlagExpressionNode)fen_it.next();
-	  if (fen!=null) {
-	    DNFFlag dflag=fen.getDNF();
-	    numberterms+=dflag.size();
-
-	    Hashtable flags=(Hashtable)flagorder.get(typed.getClassDesc());
-
-	    for(int j=0; j<dflag.size(); j++) {
-	      if (j!=0)
-		output.println(",");
-	      Vector term=dflag.get(j);
-	      int andmask=0;
-	      int checkmask=0;
-	      for(int k=0; k<term.size(); k++) {
-		DNFFlagAtom dfa=(DNFFlagAtom)term.get(k);
-		FlagDescriptor fd=dfa.getFlag();
-		boolean negated=dfa.getNegated();
-		int flagid=1<<((Integer)flags.get(fd)).intValue();
-		andmask|=flagid;
-		if (!negated)
-		  checkmask|=flagid;
-	      }
-	      output.print("/*andmask*/0x"+Integer.toHexString(andmask)+", /*checkmask*/0x"+Integer.toHexString(checkmask));
-	    }
-	  }
-	}
+        for (Iterator fen_it = fen_hashset.iterator(); fen_it.hasNext(); ) {
+          FlagExpressionNode fen = (FlagExpressionNode)fen_it.next();
+          if (fen!=null) {
+            DNFFlag dflag=fen.getDNF();
+            numberterms+=dflag.size();
+
+            Hashtable flags=(Hashtable)flagorder.get(typed.getClassDesc());
+
+            for(int j=0; j<dflag.size(); j++) {
+              if (j!=0)
+                output.println(",");
+              Vector term=dflag.get(j);
+              int andmask=0;
+              int checkmask=0;
+              for(int k=0; k<term.size(); k++) {
+                DNFFlagAtom dfa=(DNFFlagAtom)term.get(k);
+                FlagDescriptor fd=dfa.getFlag();
+                boolean negated=dfa.getNegated();
+                int flagid=1<<((Integer)flags.get(fd)).intValue();
+                andmask|=flagid;
+                if (!negated)
+                  checkmask|=flagid;
+              }
+              output.print("/*andmask*/0x"+Integer.toHexString(andmask)+", /*checkmask*/0x"+Integer.toHexString(checkmask));
+            }
+          }
+        }
       }
       output.println("};\n");
 
@@ -3183,18 +3538,18 @@ public class BuildCode {
       output.println("int predicatetags_"+predicateindex+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"[]={");
       int numtags = 0;
       if (tagel!=null) {
-	for(int j=0; j<tagel.numTags(); j++) {
-	  if (j!=0)
-	    output.println(",");
-	  TempDescriptor tmp=tagel.getTemp(j);
-	  if (!slotnumber.containsKey(tmp)) {
-	    Integer slotint=new Integer(current_slot++);
-	    slotnumber.put(tmp,slotint);
-	  }
-	  int slot=slotnumber.get(tmp).intValue();
-	  output.println("/* slot */"+ slot+", /*tagid*/"+state.getTagId(tmp.getTag()));
-	}
-	numtags = tagel.numTags();
+        for(int j=0; j<tagel.numTags(); j++) {
+          if (j!=0)
+            output.println(",");
+          TempDescriptor tmp=tagel.getTemp(j);
+          if (!slotnumber.containsKey(tmp)) {
+            Integer slotint=new Integer(current_slot++);
+            slotnumber.put(tmp,slotint);
+          }
+          int slot=slotnumber.get(tmp).intValue();
+          output.println("/* slot */"+ slot+", /*tagid*/"+state.getTagId(tmp.getTag()));
+        }
+        numtags = tagel.numTags();
       }
       output.println("};");
 
@@ -3241,67 +3596,67 @@ public class BuildCode {
       numotd = c_otd.size();
       if(maxotd<numotd) maxotd = numotd;
       if( !c_otd.isEmpty() ) {
-	for(Iterator otd_it = c_otd.iterator(); otd_it.hasNext(); ) {
-	  OptionalTaskDescriptor otd = (OptionalTaskDescriptor)otd_it.next();
-
-	  //generate the int arrays for the predicate
-	  Predicate predicate = otd.predicate;
-	  int predicateindex = generateOptionalPredicate(predicate, otd, cdtemp, output);
-	  TreeSet<Integer> fsset=new TreeSet<Integer>();
-	  //iterate through possible FSes corresponding to
-	  //the state when entering
-
-	  for(Iterator fses = otd.enterflagstates.iterator(); fses.hasNext(); ) {
-	    FlagState fs = (FlagState)fses.next();
-	    int flagid=0;
-	    for(Iterator flags = fs.getFlags(); flags.hasNext(); ) {
-	      FlagDescriptor flagd = (FlagDescriptor)flags.next();
-	      int id=1<<((Integer)flaginfo.get(flagd)).intValue();
-	      flagid|=id;
-	    }
-	    fsset.add(new Integer(flagid));
-	    //tag information not needed because tag
-	    //changes are not tolerated.
-	  }
-
-	  output.println("int enterflag_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"[]={");
-	  boolean needcomma=false;
-	  for(Iterator<Integer> it=fsset.iterator(); it.hasNext(); ) {
-	    if(needcomma)
-	      output.print(", ");
-	    output.println(it.next());
-	  }
-
-	  output.println("};\n");
-
-
-	  //generate optionaltaskdescriptor that actually
-	  //includes exit fses, predicate and the task
-	  //concerned
-	  output.println("struct optionaltaskdescriptor optionaltaskdescriptor_"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"={");
-	  output.println("&task_"+otd.td.getSafeSymbol()+",");
-	  output.println("/*index*/"+otd.getIndex()+",");
-	  output.println("/*number of enter flags*/"+fsset.size()+",");
-	  output.println("enterflag_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+",");
-	  output.println("/*number of members */"+predicateindex+",");
-	  output.println("predicatememberarray_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+",");
-	  output.println("};\n");
-	}
+        for(Iterator otd_it = c_otd.iterator(); otd_it.hasNext(); ) {
+          OptionalTaskDescriptor otd = (OptionalTaskDescriptor)otd_it.next();
+
+          //generate the int arrays for the predicate
+          Predicate predicate = otd.predicate;
+          int predicateindex = generateOptionalPredicate(predicate, otd, cdtemp, output);
+          TreeSet<Integer> fsset=new TreeSet<Integer>();
+          //iterate through possible FSes corresponding to
+          //the state when entering
+
+          for(Iterator fses = otd.enterflagstates.iterator(); fses.hasNext(); ) {
+            FlagState fs = (FlagState)fses.next();
+            int flagid=0;
+            for(Iterator flags = fs.getFlags(); flags.hasNext(); ) {
+              FlagDescriptor flagd = (FlagDescriptor)flags.next();
+              int id=1<<((Integer)flaginfo.get(flagd)).intValue();
+              flagid|=id;
+            }
+            fsset.add(new Integer(flagid));
+            //tag information not needed because tag
+            //changes are not tolerated.
+          }
+
+          output.println("int enterflag_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"[]={");
+          boolean needcomma=false;
+          for(Iterator<Integer> it=fsset.iterator(); it.hasNext(); ) {
+            if(needcomma)
+              output.print(", ");
+            output.println(it.next());
+          }
+
+          output.println("};\n");
+
+
+          //generate optionaltaskdescriptor that actually
+          //includes exit fses, predicate and the task
+          //concerned
+          output.println("struct optionaltaskdescriptor optionaltaskdescriptor_"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"={");
+          output.println("&task_"+otd.td.getSafeSymbol()+",");
+          output.println("/*index*/"+otd.getIndex()+",");
+          output.println("/*number of enter flags*/"+fsset.size()+",");
+          output.println("enterflag_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+",");
+          output.println("/*number of members */"+predicateindex+",");
+          output.println("predicatememberarray_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+",");
+          output.println("};\n");
+        }
       } else
-	continue;
+        continue;
       // if there are no optionals, there is no need to build the rest of the struct
 
       output.println("struct optionaltaskdescriptor * otdarray"+cdtemp.getSafeSymbol()+"[]={");
       c_otd = ((Hashtable)optionaltaskdescriptors.get(cdtemp)).values();
       if( !c_otd.isEmpty() ) {
-	boolean needcomma=false;
-	for(Iterator otd_it = c_otd.iterator(); otd_it.hasNext(); ) {
-	  OptionalTaskDescriptor otd = (OptionalTaskDescriptor)otd_it.next();
-	  if(needcomma)
-	    output.println(",");
-	  needcomma=true;
-	  output.println("&optionaltaskdescriptor_"+otd.getuid()+"_"+cdtemp.getSafeSymbol());
-	}
+        boolean needcomma=false;
+        for(Iterator otd_it = c_otd.iterator(); otd_it.hasNext(); ) {
+          OptionalTaskDescriptor otd = (OptionalTaskDescriptor)otd_it.next();
+          if(needcomma)
+            output.println(",");
+          needcomma=true;
+          output.println("&optionaltaskdescriptor_"+otd.getuid()+"_"+cdtemp.getSafeSymbol());
+        }
       }
       output.println("};\n");
 
@@ -3311,107 +3666,107 @@ public class BuildCode {
       TreeSet fsts=new TreeSet(new FlagComparator(flaginfo));
       fsts.addAll(hashtbtemp.keySet());
       for(Iterator fsit=fsts.iterator(); fsit.hasNext(); ) {
-	FlagState fs = (FlagState)fsit.next();
-	fscounter++;
-
-	//get the set of OptionalTaskDescriptors corresponding
-	HashSet<OptionalTaskDescriptor> availabletasks = (HashSet<OptionalTaskDescriptor>)hashtbtemp.get(fs);
-	//iterate through the OptionalTaskDescriptors and
-	//store the pointers to the optionals struct (see on
-	//top) into an array
-
-	output.println("struct optionaltaskdescriptor * optionaltaskdescriptorarray_FS"+fscounter+"_"+cdtemp.getSafeSymbol()+"[] = {");
-	for(Iterator<OptionalTaskDescriptor> mos = ordertd(availabletasks).iterator(); mos.hasNext(); ) {
-	  OptionalTaskDescriptor mm = mos.next();
-	  if(!mos.hasNext())
-	    output.println("&optionaltaskdescriptor_"+mm.getuid()+"_"+cdtemp.getSafeSymbol());
-	  else
-	    output.println("&optionaltaskdescriptor_"+mm.getuid()+"_"+cdtemp.getSafeSymbol()+",");
-	}
+        FlagState fs = (FlagState)fsit.next();
+        fscounter++;
+
+        //get the set of OptionalTaskDescriptors corresponding
+        HashSet<OptionalTaskDescriptor> availabletasks = (HashSet<OptionalTaskDescriptor>)hashtbtemp.get(fs);
+        //iterate through the OptionalTaskDescriptors and
+        //store the pointers to the optionals struct (see on
+        //top) into an array
+
+        output.println("struct optionaltaskdescriptor * optionaltaskdescriptorarray_FS"+fscounter+"_"+cdtemp.getSafeSymbol()+"[] = {");
+        for(Iterator<OptionalTaskDescriptor> mos = ordertd(availabletasks).iterator(); mos.hasNext(); ) {
+          OptionalTaskDescriptor mm = mos.next();
+          if(!mos.hasNext())
+            output.println("&optionaltaskdescriptor_"+mm.getuid()+"_"+cdtemp.getSafeSymbol());
+          else
+            output.println("&optionaltaskdescriptor_"+mm.getuid()+"_"+cdtemp.getSafeSymbol()+",");
+        }
 
-	output.println("};\n");
+        output.println("};\n");
 
-	//process flag information (what the flag after failure is) so we know what optionaltaskdescriptors to choose.
+        //process flag information (what the flag after failure is) so we know what optionaltaskdescriptors to choose.
 
-	int flagid=0;
-	for(Iterator flags = fs.getFlags(); flags.hasNext(); ) {
-	  FlagDescriptor flagd = (FlagDescriptor)flags.next();
-	  int id=1<<((Integer)flaginfo.get(flagd)).intValue();
-	  flagid|=id;
-	}
+        int flagid=0;
+        for(Iterator flags = fs.getFlags(); flags.hasNext(); ) {
+          FlagDescriptor flagd = (FlagDescriptor)flags.next();
+          int id=1<<((Integer)flaginfo.get(flagd)).intValue();
+          flagid|=id;
+        }
 
-	//process tag information
-
-	int tagcounter = 0;
-	boolean first = true;
-	Enumeration tag_enum = fs.getTags();
-	output.println("int tags_FS"+fscounter+"_"+cdtemp.getSafeSymbol()+"[]={");
-	while(tag_enum.hasMoreElements()) {
-	  tagcounter++;
-	  TagDescriptor tagd = (TagDescriptor)tag_enum.nextElement();
-	  if(first==true)
-	    first = false;
-	  else
-	    output.println(", ");
-	  output.println("/*tagid*/"+state.getTagId(tagd));
-	}
-	output.println("};");
-
-	Set<TaskIndex> tiset=sa.getTaskIndex(fs);
-	for(Iterator<TaskIndex> itti=tiset.iterator(); itti.hasNext(); ) {
-	  TaskIndex ti=itti.next();
-	  if (ti.isRuntime())
-	    continue;
-
-	  Set<OptionalTaskDescriptor> otdset=sa.getOptions(fs, ti);
-
-	  output.print("struct optionaltaskdescriptor * optionaltaskfailure_FS"+fscounter+"_"+ti.getTask().getSafeSymbol()+"_"+ti.getIndex()+"_array[] = {");
-	  boolean needcomma=false;
-	  for(Iterator<OptionalTaskDescriptor> otdit=ordertd(otdset).iterator(); otdit.hasNext(); ) {
-	    OptionalTaskDescriptor otd=otdit.next();
-	    if(needcomma)
-	      output.print(", ");
-	    needcomma=true;
-	    output.println("&optionaltaskdescriptor_"+otd.getuid()+"_"+cdtemp.getSafeSymbol());
-	  }
-	  output.println("};");
-
-	  output.print("struct taskfailure taskfailure_FS"+fscounter+"_"+ti.getTask().getSafeSymbol()+"_"+ti.getIndex()+" = {");
-	  output.print("&task_"+ti.getTask().getSafeSymbol()+", ");
-	  output.print(ti.getIndex()+", ");
-	  output.print(otdset.size()+", ");
-	  output.print("optionaltaskfailure_FS"+fscounter+"_"+ti.getTask().getSafeSymbol()+"_"+ti.getIndex()+"_array");
-	  output.println("};");
-	}
+        //process tag information
+
+        int tagcounter = 0;
+        boolean first = true;
+        Enumeration tag_enum = fs.getTags();
+        output.println("int tags_FS"+fscounter+"_"+cdtemp.getSafeSymbol()+"[]={");
+        while(tag_enum.hasMoreElements()) {
+          tagcounter++;
+          TagDescriptor tagd = (TagDescriptor)tag_enum.nextElement();
+          if(first==true)
+            first = false;
+          else
+            output.println(", ");
+          output.println("/*tagid*/"+state.getTagId(tagd));
+        }
+        output.println("};");
 
-	tiset=sa.getTaskIndex(fs);
-	boolean needcomma=false;
-	int runtimeti=0;
-	output.println("struct taskfailure * taskfailurearray"+fscounter+"_"+cdtemp.getSafeSymbol()+"[]={");
-	for(Iterator<TaskIndex> itti=tiset.iterator(); itti.hasNext(); ) {
-	  TaskIndex ti=itti.next();
-	  if (ti.isRuntime()) {
-	    runtimeti++;
-	    continue;
-	  }
-	  if (needcomma)
-	    output.print(", ");
-	  needcomma=true;
-	  output.print("&taskfailure_FS"+fscounter+"_"+ti.getTask().getSafeSymbol()+"_"+ti.getIndex());
-	}
-	output.println("};\n");
+        Set<TaskIndex> tiset=sa.getTaskIndex(fs);
+        for(Iterator<TaskIndex> itti=tiset.iterator(); itti.hasNext(); ) {
+          TaskIndex ti=itti.next();
+          if (ti.isRuntime())
+            continue;
+
+          Set<OptionalTaskDescriptor> otdset=sa.getOptions(fs, ti);
+
+          output.print("struct optionaltaskdescriptor * optionaltaskfailure_FS"+fscounter+"_"+ti.getTask().getSafeSymbol()+"_"+ti.getIndex()+"_array[] = {");
+          boolean needcomma=false;
+          for(Iterator<OptionalTaskDescriptor> otdit=ordertd(otdset).iterator(); otdit.hasNext(); ) {
+            OptionalTaskDescriptor otd=otdit.next();
+            if(needcomma)
+              output.print(", ");
+            needcomma=true;
+            output.println("&optionaltaskdescriptor_"+otd.getuid()+"_"+cdtemp.getSafeSymbol());
+          }
+          output.println("};");
+
+          output.print("struct taskfailure taskfailure_FS"+fscounter+"_"+ti.getTask().getSafeSymbol()+"_"+ti.getIndex()+" = {");
+          output.print("&task_"+ti.getTask().getSafeSymbol()+", ");
+          output.print(ti.getIndex()+", ");
+          output.print(otdset.size()+", ");
+          output.print("optionaltaskfailure_FS"+fscounter+"_"+ti.getTask().getSafeSymbol()+"_"+ti.getIndex()+"_array");
+          output.println("};");
+        }
 
-	//Store the result in fsanalysiswrapper
+        tiset=sa.getTaskIndex(fs);
+        boolean needcomma=false;
+        int runtimeti=0;
+        output.println("struct taskfailure * taskfailurearray"+fscounter+"_"+cdtemp.getSafeSymbol()+"[]={");
+        for(Iterator<TaskIndex> itti=tiset.iterator(); itti.hasNext(); ) {
+          TaskIndex ti=itti.next();
+          if (ti.isRuntime()) {
+            runtimeti++;
+            continue;
+          }
+          if (needcomma)
+            output.print(", ");
+          needcomma=true;
+          output.print("&taskfailure_FS"+fscounter+"_"+ti.getTask().getSafeSymbol()+"_"+ti.getIndex());
+        }
+        output.println("};\n");
 
-	output.println("struct fsanalysiswrapper fsanalysiswrapper_FS"+fscounter+"_"+cdtemp.getSafeSymbol()+"={");
-	output.println("/*flag*/"+flagid+",");
-	output.println("/* number of tags*/"+tagcounter+",");
-	output.println("tags_FS"+fscounter+"_"+cdtemp.getSafeSymbol()+",");
-	output.println("/* numtask failures */"+(tiset.size()-runtimeti)+",");
-	output.println("taskfailurearray"+fscounter+"_"+cdtemp.getSafeSymbol()+",");
-	output.println("/* number of optionaltaskdescriptors */"+availabletasks.size()+",");
-	output.println("optionaltaskdescriptorarray_FS"+fscounter+"_"+cdtemp.getSafeSymbol());
-	output.println("};\n");
+        //Store the result in fsanalysiswrapper
+
+        output.println("struct fsanalysiswrapper fsanalysiswrapper_FS"+fscounter+"_"+cdtemp.getSafeSymbol()+"={");
+        output.println("/*flag*/"+flagid+",");
+        output.println("/* number of tags*/"+tagcounter+",");
+        output.println("tags_FS"+fscounter+"_"+cdtemp.getSafeSymbol()+",");
+        output.println("/* numtask failures */"+(tiset.size()-runtimeti)+",");
+        output.println("taskfailurearray"+fscounter+"_"+cdtemp.getSafeSymbol()+",");
+        output.println("/* number of optionaltaskdescriptors */"+availabletasks.size()+",");
+        output.println("optionaltaskdescriptorarray_FS"+fscounter+"_"+cdtemp.getSafeSymbol());
+        output.println("};\n");
 
       }
 
@@ -3419,9 +3774,9 @@ public class BuildCode {
       output.println("struct fsanalysiswrapper * fsanalysiswrapperarray_"+cdtemp.getSafeSymbol()+"[] = {");
       boolean needcomma=false;
       for(int i = 0; i<fscounter; i++) {
-	if (needcomma) output.print(",");
-	output.println("&fsanalysiswrapper_FS"+(i+1)+"_"+cdtemp.getSafeSymbol());
-	needcomma=true;
+        if (needcomma) output.print(",");
+        output.println("&fsanalysiswrapper_FS"+(i+1)+"_"+cdtemp.getSafeSymbol());
+        needcomma=true;
       }
       output.println("};");
 
@@ -3440,11 +3795,11 @@ public class BuildCode {
     for(int i=0; i<state.numClasses(); i++) {
       ClassDescriptor cn=cdarray[i];
       if (i>0)
-	output.print(", ");
+        output.print(", ");
       if ((cn != null) && (processedcd.contains(cn)))
-	output.print("&classanalysiswrapper_"+cn.getSafeSymbol());
+        output.print("&classanalysiswrapper_"+cn.getSafeSymbol());
       else
-	output.print("NULL");
+        output.print("NULL");
     }
     output.println("};");
 
@@ -3464,14 +3819,27 @@ public class BuildCode {
     for(Iterator it=r.keySet().iterator(); it.hasNext(); ) {
       Set s=r.get(it.next());
       for(Iterator it2=s.iterator(); it2.hasNext(); ) {
-	OptionalTaskDescriptor otd=(OptionalTaskDescriptor)it2.next();
-	l.add(otd);
+        OptionalTaskDescriptor otd=(OptionalTaskDescriptor)it2.next();
+        l.add(otd);
       }
     }
 
     return l;
   }
 
+
+
+  // either create and register an extension object with buildcode
+  // or look at the following option of subclassing BuildCode
+  private Vector<BuildCodeExtension> extensions;
+
+  // note that extensions are invoked in the order they are added
+  // to BuildCode
+  public void registerExtension( BuildCodeExtension bcx ) {
+    extensions.add( bcx );
+  }
+
+
   // override these methods in a subclass of BuildCode
   // to generate code for additional systems
   protected void printExtraArrayFields(PrintWriter outclassdefs) {
@@ -3494,6 +3862,8 @@ public class BuildCode {
   }
   protected void additionalCodeAtTopOfMain(PrintWriter outmethod) {
   }
+  protected void additionalCodeForCommandLineArgs(PrintWriter outmethod, String argsVar) {
+  }
   protected void additionalCodeAtBottomOfMain(PrintWriter outmethod) {
   }
   protected void additionalIncludesMethodsImplementation(PrintWriter outmethod) {
@@ -3510,34 +3880,34 @@ public class BuildCode {
   }
   protected void additionalCodePostNode(FlatMethod fm, FlatNode fn, PrintWriter output) {
   }
-  
+
   private void printSourceLineNumber(FlatMethod fm, FlatNode fn, PrintWriter output) {
     // we do not print out line number if no one explicitly set the number
-    if(fn.getNumLine()!=-1){
-      
+    if(fn.getNumLine()!=-1) {
+
       int lineNum=fn.getNumLine();
 
       // do not generate the line number if it is same as the previous one
       boolean needtoprint;
-      if(fn.prev.size()==0){
+      if(fn.prev.size()==0) {
         needtoprint=true;
-      }else{
+      } else {
         needtoprint=false;
       }
 
-      for(int i=0;i<fn.prev.size();i++){
+      for(int i=0; i<fn.prev.size(); i++) {
         int prevLineNum=((FlatNode)fn.prev.get(i)).getNumLine();
-        if(prevLineNum!=lineNum){
+        if(prevLineNum!=lineNum) {
           needtoprint=true;
           break;
         }
       }
-      if(needtoprint){
+      if(needtoprint) {
         output.println("// "+fm.getMethod().getClassDesc().getSourceFileName()+":"+fn.getNumLine());
       }
     }
   }
-  
+
 }