From: adam <adam@megacz.com>
Date: Tue, 13 Jul 2004 02:17:45 +0000 (+0000)
Subject: removed NanoGoat
X-Git-Url: http://git.megacz.com/?p=org.ibex.util.git;a=commitdiff_plain;h=d231d80267c8202c46a033f0a2f3831d04b56043

removed NanoGoat

darcs-hash:20040713021745-5007d-d12370b7fcd69440024f4efcb5e47f56c1c39a23.gz
---

diff --git a/src/org/ibex/util/NanoGoat.java b/src/org/ibex/util/NanoGoat.java
deleted file mode 100644
index 2b5b772..0000000
--- a/src/org/ibex/util/NanoGoat.java
+++ /dev/null
@@ -1,475 +0,0 @@
-package org.ibex.util;
-import java.util.*;
-import java.io.*;
-import java.util.zip.*;
-import org.apache.bcel.*;
-import org.apache.bcel.generic.*;
-import org.apache.bcel.classfile.*;
-import org.apache.bcel.util.*;
-
-public class NanoGoat {
-
-    public static final boolean deleteMethods = false;
-    public static SyntheticRepository repo = null;
-    public static HashSet dest = new HashSet();
-    public static HashSet constructed = new HashSet();
-    public static String outdir = ".";
-    public static Hashtable subclasses = new Hashtable();
-    public static Hashtable uponconstruction = new Hashtable();
-    public static Hashtable mark_if_constructed = new Hashtable();
-    public static int level = 0;
-
-    public NanoGoat() { }
-
-    public void loadAllMethods(String classname) throws Exception {
-        visitJavaClass(repo.loadClass(classname));
-        Method[] meths = getMethods(repo.loadClass(classname));
-        for(int i=0; i<meths.length; i++)
-            visitJavaMethod(repo.loadClass(classname), meths[i]);
-    }
-
-    public void loadAllStaticMethods(String classname) throws Exception {
-        visitJavaClass(repo.loadClass(classname));
-        Method[] meths = getMethods(repo.loadClass(classname));
-        for(int i=0; i<meths.length; i++)
-            if (meths[i].isStatic())
-                visitJavaMethod(repo.loadClass(classname), meths[i]);
-    }
-
-    public void loadMethod(String classAndMethodName) throws Exception {
-        String classname = classAndMethodName.substring(0, classAndMethodName.lastIndexOf('.'));
-        String methodname = classAndMethodName.substring(classAndMethodName.lastIndexOf('.') + 1);
-        if (classname.endsWith("." + methodname)) methodname = "<init>";
-        visitJavaClass(repo.loadClass(classname));
-        Method[] meths = getMethods(repo.loadClass(classname));
-        for(int i=0; i<meths.length; i++)
-            if (meths[i].getName().equals(methodname))
-                visitJavaMethod(repo.loadClass(classname), meths[i]);
-    }
-    public static void main(String[] args) throws Exception {
-        int start = 1;
-        repo = SyntheticRepository.getInstance(new ClassPath(args[0]));
-
-        NanoGoat bcp = new NanoGoat();
-        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
-        for(String s = br.readLine(); s != null; s = br.readLine()) {
-            s = s.trim();
-            if (s.length() == 0) continue;
-            try {
-                if (s.endsWith("$")) s = s.substring(0, s.length() - 1);
-                if (s.endsWith(".class")) {
-                    bcp.visitJavaClass(repo.loadClass(s.substring(0, s.length() - 6)));
-                } else {
-                    JavaClass cl = repo.loadClass(s.substring(0, s.lastIndexOf('.')));;
-                    bcp.visitJavaClass(cl);
-                    bcp.loadMethod(s);
-                    Field[] fields = cl.getFields();
-                    for(int j=0; j<fields.length; j++) {
-                        if (fields[j].getName().equals(s.substring(s.lastIndexOf('.') + 1)))
-                            bcp.visitJavaField(fields[j], cl);
-                    }
-                }
-            } catch (Exception e) {
-                System.out.println("WARNING: couldn't load class for " + s);
-                e.printStackTrace();
-            }
-        }
-
-        System.out.println("\n\n======================================================================\n");
-
-        // we call start(), but the VM calls run()...
-        bcp.loadMethod("java.lang.Thread.run");
-        bcp.loadAllMethods("java.lang.SecurityContext");
-        bcp.loadAllMethods("java.lang.ThreadDeath");
-        bcp.loadMethod("java.lang.Thread.run");                  // we call start(), but the VM calls run()...
-        bcp.loadMethod("java.lang.ref.Reference.enqueue");       // the GC calls this directly
-        bcp.loadAllMethods("gnu.gcj.runtime.StringBuffer");      // the compiler emits calls directly to this class
-        bcp.loadAllMethods("gnu.gcj.convert.Input_UTF8");        // retrieved via reflection
-        bcp.loadAllMethods("gnu.gcj.convert.Output_UTF8");       // retrieved via reflection
-        bcp.loadMethod("gnu.gcj.convert.BytesToUnicode.done");   // called by natString
-        bcp.loadAllStaticMethods("java.lang.reflect.Modifier");        // used all over natClass...
-
-        // the Interpreter.run() method's switchblock is too complex...
-        bcp.loadAllMethods("org.ibex.js.Interpreter$TryMarker");
-        bcp.loadAllMethods("org.ibex.js.Interpreter$CatchMarker");
-        bcp.loadAllMethods("org.ibex.js.Interpreter$LoopMarker");
-        bcp.loadAllMethods("org.ibex.js.Interpreter$FinallyData");
-        bcp.loadAllMethods("org.ibex.js.Interpreter$CallMarker");
-        bcp.loadAllMethods("org.ibex.js.Interpreter");
-        bcp.loadAllMethods("org.ibex.js.Interpreter$1");
-        bcp.loadAllMethods("org.ibex.js.Interpreter$Stub");
-        bcp.loadAllMethods("org.ibex.js.Trap$TrapScope");
-        bcp.loadMethod("org.ibex.js.JSScope.top");
-        bcp.loadAllMethods("org.ibex.Picture$1");
-        bcp.loadAllMethods("org.ibex.Ibex$Blessing");
-        bcp.loadAllMethods("org.ibex.util.SSL$entropySpinner");
-        bcp.loadAllMethods("org.ibex.HTTP$HTTPInputStream");
-        bcp.visitJavaClass(repo.loadClass("org.ibex.util.SSL"));
-
-        bcp.loadAllMethods("java.util.Hashtable$HashIterator");
-        bcp.loadMethod("java.util.SimpleTimeZone.useDaylightTime");
-        bcp.visitJavaClass(repo.loadClass("gnu.gcj.runtime.FinalizerThread"));
-        bcp.visitJavaClass(repo.loadClass("gnu.gcj.runtime.FirstThread"));
-
-        // to ensure we get all the stuff that might be called from CNI
-        bcp.loadAllMethods("org.ibex.plat.Linux");
-        bcp.loadAllMethods("org.ibex.plat.X11");
-        bcp.loadAllMethods("org.ibex.plat.GCJ");
-        bcp.loadAllMethods("org.ibex.plat.POSIX");
-        bcp.loadAllMethods("org.ibex.plat.X11$X11Surface");
-        bcp.loadAllMethods("org.ibex.plat.X11$X11PixelBuffer");
-        bcp.loadAllMethods("org.ibex.plat.X11$X11Picture");
-        bcp.loadAllMethods("org.ibex.Surface");
-        bcp.loadAllMethods("org.ibex.Picture");
-        bcp.loadAllMethods("org.ibex.PixelBuffer");
-
-        // primary entry point
-        bcp.loadMethod("org.ibex.plat.Linux.main");
-        System.out.println();
-
-        System.out.println("Dumping...");
-        ZipFile zf = new ZipFile(args[0]);
-        ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(args[0] + ".tmp"));
-        Enumeration e = zf.entries();
-        while(e.hasMoreElements()) {
-            ZipEntry ze = ((ZipEntry)e.nextElement());
-            String ss = ze.getName();
-            if (!ss.endsWith(".class")) continue;
-            ss = ss.substring(0, ss.length() - 6);
-            ss = ss.replace('/', '.');
-            dump(repo.loadClass(ss), zos);
-        }
-        zos.close();
-        zf.close();
-        new File(args[0] + ".tmp").renameTo(new File(args[0] + ".pruned"));
-    }
-
-    public static void dump(JavaClass clazz, ZipOutputStream zos) throws Exception {
-        if (!dest.contains(clazz)) return;
-
-        ConstantPoolGen newcpg = new ConstantPoolGen(clazz.getConstantPool());
-        ClassGen cg = new ClassGen(clazz);
-        InstructionFactory factory = new InstructionFactory(cg, newcpg);
-        cg.setMajor(46);
-        cg.setMinor(0);
-        cg.setConstantPool(newcpg);
-
-        boolean isconstructed = false;
-        Method[] methods = getMethods(clazz);
-        for(int i=0; i<methods.length; i++)
-            if (dest.contains(methods[i]) && methods[i].getName().equals("<init>"))
-                isconstructed = true;
-
-        // we can only prune static fields (to avoid altering object layout, which is hardcoded into
-        // CNI code), but that's okay since instance fields don't contribute to binary size
-        Field[] fields = clazz.getFields();
-        for(int i=0; i<fields.length; i++) {
-            if ((!dest.contains(fields[i]) && fields[i].isStatic()) ||
-                ((!(constructed.contains(clazz))) && !fields[i].isStatic())) { 
-                System.out.println("  pruning field " + clazz.getClassName() + "." + fields[i].getName());
-                // FIXME this confuses gcj in jar-at-a-time mode
-                //cg.removeField(fields[i]);
-            }
-        }
-
-        int numMethods = 0;
-        boolean good = false;
-        for(int i=0; i<methods.length; i++) {
-            if (dest.contains(methods[i]) && (isconstructed || methods[i].isStatic())) {
-                good = true;
-            } else {
-                if (methods[i].getCode() == null) {
-                    System.out.println("  empty codeblock: " + clazz.getClassName() + "." + methods[i].getName());
-                } else {
-                    System.out.println("  pruning " +(isconstructed?"":"unconstructed")+ " method " +
-                                       clazz.getClassName() + "." + methods[i].getName());
-                    if (deleteMethods) { cg.removeMethod(methods[i]); continue; }
-                    MethodGen mg = new MethodGen(methods[i], clazz.getClassName(), newcpg);
-                    mg.removeExceptions();
-                    InstructionList il = new InstructionList();
-                    mg.setInstructionList(il);
-                    InstructionHandle ih_0 = il.append(factory.createNew("java.lang.UnsatisfiedLinkError"));
-                    il.append(InstructionConstants.DUP);
-                    il.append(factory.createInvoke("java.lang.UnsatisfiedLinkError",
-                                                   "<init>", Type.VOID, Type.NO_ARGS, Constants.INVOKESPECIAL));
-                    il.append(InstructionConstants.ATHROW);
-                    mg.setMaxStack();
-                    mg.setMaxLocals();
-                    mg.removeExceptions();
-                    mg.removeLocalVariables();
-                    mg.removeExceptionHandlers();
-                    mg.removeLineNumbers();
-                    cg.replaceMethod(methods[i], mg.getMethod());
-                    il.dispose();
-                }
-            }
-        }
-
-        // FIXME: chain up to superclass' <clinit>... that might remove the need for this hack
-        // FIXME: gcj compiling in jar-at-a-time mode can't be convinced to let classes outside the jar override
-        //        the ones inside the jar
-        good = true;
-
-        if (!good && !clazz.isAbstract() && !clazz.isInterface()) {
-            System.out.println("DROPPING " + clazz.getClassName());
-            JavaClass[] ifaces = clazz.getInterfaces();
-            String[] ifacestrings = new String[ifaces.length];
-            for(int i=0; i<ifaces.length; i++) ifacestrings[i] = ifaces[i].getClassName();
-            cg = new ClassGen(clazz.getClassName(),
-                              clazz.getSuperClass().getClassName(),
-                              clazz.getFileName(),
-                              clazz.getAccessFlags(),
-                              ifacestrings,
-                              newcpg);
-        } else {
-            System.out.println("dumping " + clazz.getClassName());
-        }
-        FilterOutputStream noclose = new FilterOutputStream(zos) { public void close() throws IOException { flush(); } };
-        zos.putNextEntry(new ZipEntry(clazz.getClassName().replace('.', '/')+".class"));
-        cg.getJavaClass().dump(noclose);
-        noclose.flush();
-    }
-
-    public JavaClass sig2class(String sig) throws Exception {
-        if (sig == null) return null;
-        while (sig.length() > 0 && (sig.charAt(0) == 'L' || sig.charAt(0) == '[')) {
-            if (sig.charAt(0) == 'L') sig = sig.substring(1, sig.length() - 1);
-            else if (sig.charAt(0) == '[') sig = sig.substring(1, sig.length());
-        }
-        if (sig.length() <= 1) return null;
-        if (sig.equals("<null object>")) return null;
-        if (sig.startsWith("<return address")) return null;
-        return repo.loadClass(sig);
-    }
-    public void load(String sig) throws Exception {
-        if (sig == null) return;
-        while (sig.length() > 0 && (sig.charAt(0) == 'L' || sig.charAt(0) == '[')) {
-            if (sig.charAt(0) == 'L') sig = sig.substring(1, sig.length() - 1);
-            else if (sig.charAt(0) == '[') sig = sig.substring(1, sig.length());
-        }
-        if (sig.length() <= 1) return;
-        if (sig.equals("<null object>")) return;
-        if (sig.startsWith("<return address")) return;
-        visitJavaClass(repo.loadClass(sig));
-    }
-    public void load(Type t) throws Exception {
-        if (t == null) return;
-        if (t instanceof ArrayType) load(((ArrayType)t).getElementType());
-        if (!(t instanceof ObjectType)) return;
-        load(((ObjectType)t).getClassName());
-    }
-
-    public String getMethodSignature(Method m, ConstantPoolGen cpg) throws Exception { return m.getName() + m.getSignature(); }
-    public String getMethodSignature(InvokeInstruction ii, ConstantPoolGen cpg) throws Exception {
-        String sig = "";
-        Type[] argtypes = ii.getArgumentTypes(cpg);
-        for(int j=0; j<argtypes.length; j++) sig += argtypes[j].getSignature();
-        return ii.getMethodName(cpg) + "(" + sig + ")" + ii.getReturnType(cpg).getSignature();
-    }
-
-    public void visitJavaMethod(JavaClass jc, Method method) throws Exception {
-        visitJavaClass(jc);
-        if (jc.getClassName().indexOf("SharedLib") != -1) return;
-        if (jc.getClassName().indexOf("Datagram") != -1) return;
-        if (jc.getClassName().startsWith("java.io.Object")) return;
-        if (jc.getClassName().startsWith("java.util.jar.")) return;
-        if (jc.getClassName().startsWith("java.net.Inet6")) return;
-
-        // gcj bug; gcj can't compile this method from a .class file input; I have no idea why
-        if (jc.getClassName().equals("java.lang.System") && method.getName().equals("runFinalizersOnExit")) return;
-
-        // we know these can't be constructed
-        if (method.getName().equals("<init>") && jc.getClassName().startsWith("java.lang.reflect.")) return;
-
-        if (dest.contains(method)) return;
-        dest.add(method);
-
-        if (method.getName().equals("<clinit>") && jc.getSuperClass() != null)
-            loadMethod(jc.getSuperClass().getClassName() + ".<clinit>");
-
-        if (method.isStatic() || method.getName().equals("<init>")) loadMethod(jc.getClassName() + ".<clinit>");
-        if (method.getName().equals("<init>")) {
-            // FIXME: generalize to all perinstancemethods
-            constructed.add(jc);
-            HashSet hs = (HashSet)uponconstruction.get(jc);
-            if (hs != null) {
-                Iterator it = hs.iterator();
-                while(it.hasNext()) visitJavaMethod(jc, (Method)it.next());
-            }
-            loadMethod(jc.getClassName() + ".equals");
-            loadMethod(jc.getClassName() + ".hashCode");
-            loadMethod(jc.getClassName() + ".toString");
-            loadMethod(jc.getClassName() + ".finalize");
-            loadMethod(jc.getClassName() + ".clone");
-        }
-
-        ConstantPoolGen cpg = new ConstantPoolGen(method.getConstantPool());
-        if (!method.isStatic() && !constructed.contains(jc)) {
-            HashSet hs = (HashSet)uponconstruction.get(jc);
-            if (hs == null) uponconstruction.put(jc, hs = new HashSet());
-            hs.add(method);
-            markMethodInSubclasses(jc, method, cpg);
-            dest.remove(method);
-            return;
-        }
-
-        level += 2;
-        for(int i=0; i<level; i++) System.out.print(" ");
-        System.out.print(jc.getClassName() + "." + getMethodSignature(method, cpg));
-        markMethodInSubclasses(jc, method, cpg);
-        if (method.getCode() == null) { System.out.println(); level -= 2; return; }
-        byte[] code = method.getCode().getCode();
-        InstructionList il = new InstructionList(code);
-        InstructionHandle[] instructions = il.getInstructionHandles();
-        System.out.println(" [" + instructions.length + " instructions]");
-        for(int i=0; i<instructions.length; i++){ 
-            Instruction instr = instructions[i].getInstruction();;
-            if (instr instanceof Select) {
-                InstructionHandle[] ih2 = ((Select)instr).getTargets();
-                InstructionHandle[] ih3 = new InstructionHandle[instructions.length + ih2.length];
-                System.arraycopy(instructions, 0, ih3, 0, instructions.length);
-                System.arraycopy(ih2, 0, ih3, instructions.length, ih2.length);
-                instructions = ih3;
-            }
-            if (instr instanceof LoadClass) {
-                ObjectType ot = (ObjectType)((LoadClass)instr).getLoadClassType(cpg);
-                if (ot != null) loadMethod(ot.getClassName() + ".<clinit>");
-            }
-            if (instr instanceof CPInstruction) load(((CPInstruction)instr).getType(cpg));
-            if (instr instanceof TypedInstruction) load(((TypedInstruction)instr).getType(cpg));
-            if (instr instanceof NEW) loadMethod(((NEW)instr).getLoadClassType(cpg).getClassName() + ".<init>");
-            if (instr instanceof org.apache.bcel.generic.FieldOrMethod)
-                load(((org.apache.bcel.generic.FieldOrMethod)instr).getClassType(cpg));
-            if (instr instanceof org.apache.bcel.generic.FieldInstruction) {
-                load(((org.apache.bcel.generic.FieldInstruction)instr).getFieldType(cpg));
-                load(((org.apache.bcel.generic.FieldInstruction)instr).getType(cpg));
-                String fieldName = ((org.apache.bcel.generic.FieldInstruction)instr).getFieldName(cpg);
-                JavaClass jc2 = repo.loadClass(((ObjectType)((org.apache.bcel.generic.FieldInstruction)instr).
-                                                getLoadClassType(cpg)).getClassName());
-                Field[] fields = jc2.getFields();
-                for(int j=0; j<fields.length; j++) if (fields[j].getName().equals(fieldName)) visitJavaField(fields[j], jc2);
-            }
-            if (instr instanceof InvokeInstruction) {
-                InvokeInstruction ii = (InvokeInstruction)instr;
-                String ii_sig = getMethodSignature(ii, cpg);
-                JavaClass c = sig2class(ii.getLoadClassType(cpg).getSignature());
-
-                load(ii.getType(cpg));
-                Method[] meths = getMethods(c);
-                boolean good = false;
-                for(int i2=0; i2<meths.length; i2++) {
-                    if (getMethodSignature(meths[i2], cpg).equals(ii_sig)) {
-                        visitJavaMethod(c, meths[i2]);
-                        good = true;
-                        break;
-                    }
-                } 
-                if (!good) throw new Exception("couldn't find method " + getMethodSignature(ii, cpg) + " in " + c.getClassName());
-            }
-        }
-        Type[] argtypes = method.getArgumentTypes();
-        for(int i=0; i<argtypes.length; i++) load(argtypes[i]);
-        if (method.getExceptionTable() != null) {
-            String[] exntypes = method.getExceptionTable().getExceptionNames();
-            for(int i=0; i<exntypes.length; i++) load(exntypes[i]);
-        }
-        level -= 2;
-    }
-
-    public void visitJavaField(Field field, JavaClass clazz) throws Exception {
-        if (dest.contains(field)) return;
-        dest.add(field);
-        if (field.isStatic()) loadMethod(clazz.getClassName() + ".<clinit>");
-    }
-
-    public void visitJavaClass(JavaClass clazz) throws Exception {
-        if (dest.contains(clazz)) return;
-        dest.add(clazz);
-
-        ConstantPoolGen cpg = new ConstantPoolGen(clazz.getConstantPool());
-        level += 2;
-        for(int i=0; i<level; i++) System.out.print(" ");
-        System.out.println(clazz.getClassName() + ".class");
-
-        JavaClass superclass = clazz.getSuperClass();
-        for(JavaClass sup = superclass; sup != null; sup = sup.getSuperClass()) {
-            if (subclasses.get(sup) == null) subclasses.put(sup, new HashSet());
-            ((HashSet)subclasses.get(sup)).add(clazz);
-        }
-        JavaClass[] interfaces = clazz.getAllInterfaces();
-        for(int i=0; i<interfaces.length; i++) {
-            if (subclasses.get(interfaces[i]) == null) subclasses.put(interfaces[i], new HashSet());
-            ((HashSet)subclasses.get(interfaces[i])).add(clazz);
-        }
-
-        for(JavaClass sup = superclass; sup != null; sup = sup.getSuperClass()) {
-            visitJavaClass(sup);
-            remarkMethods(sup, clazz, cpg);
-        }
-        for(int i=0; i<interfaces.length; i++) {
-            visitJavaClass(interfaces[i]);
-            remarkMethods(interfaces[i], clazz, cpg);
-        }
-
-        Field[] fields = clazz.getFields();
-        for(int i=0; i<fields.length; i++) {
-            if (!fields[i].isStatic()) visitJavaField(fields[i], clazz);
-            else {
-                Type t = fields[i].getType();
-                if (t instanceof ObjectType) load(t);
-            }
-        }
-        level -= 2;
-    }
-
-    public void markMethodInSubclasses(JavaClass c, Method m, JavaClass subclass, ConstantPoolGen cpg) throws Exception {
-        if (m.isStatic()) return;
-        if (m.getName().equals("<init>")) return;
-        if (m.getName().equals("equals")) return;
-        if (m.getName().equals("hashCode")) return;
-        if (m.getName().equals("clone")) return;
-        if (m.getName().equals("finalize")) return;
-        if (m.getName().equals("toString")) return;
-        String sig = getMethodSignature(m, cpg);
-        Method[] submethods = getMethods(subclass);
-        for(int j=0; j<submethods.length; j++)
-            if (getMethodSignature(submethods[j], cpg).equals(sig))
-                visitJavaMethod(subclass, submethods[j]);
-    }
-    public void markMethodInSubclasses(JavaClass c, Method m, ConstantPoolGen cpg) throws Exception {
-        if (m.isStatic()) return;
-        if (m.getName().equals("<init>")) return;
-        HashSet s = (HashSet)subclasses.get(c);
-        if (s == null) return;
-        Object[] subclasses = s.toArray();
-        for(int i=0; i<subclasses.length; i++) {
-            JavaClass subclass = (JavaClass)subclasses[i];
-            if (subclass == c) continue;
-            markMethodInSubclasses(c, m, subclass, cpg);
-        }
-    }
-        
-    public void remarkMethods(JavaClass c, ConstantPoolGen cpg) throws Exception {
-        Method[] meths =getMethods(c);
-        for(int j=0; j<meths.length; j++)
-            if (dest.contains(meths[j]) ||
-                (uponconstruction.get(c) != null && ((HashSet)uponconstruction.get(c)).contains(meths[j])))
-                markMethodInSubclasses(c, meths[j], cpg);
-    }
-
-    public void remarkMethods(JavaClass c, JavaClass target, ConstantPoolGen cpg) throws Exception {
-        Method[] meths = getMethods(c);
-        for(int j=0; j<meths.length; j++)
-            if (dest.contains(meths[j]) ||
-                (uponconstruction.get(c) != null && ((HashSet)uponconstruction.get(c)).contains(meths[j])))
-                markMethodInSubclasses(c, meths[j], target, cpg);
-    }
-
-    public static Hashtable methodsHashtable = new Hashtable();
-    public static Method[] getMethods(JavaClass c) {
-        Method[] ret = (Method[])methodsHashtable.get(c);
-        if (ret == null) methodsHashtable.put(c, ret = c.getMethods());
-        return ret;
-    }
-
-}