/**
* Put a class representation of the primitive type
*/
public static void getPrimitiveClass(StackFrame frame)
{
char typeChar = (char)((int)(frame.getLocalVariables())[0]);
if (log.IsDebugEnabled) log.DebugFormat("Returning class for {0}",typeChar);
switch (typeChar){
case 'I':{
frame.getPrev().pushOperand(Type.GetType("System.Int32"));
break;
}
case 'Z':{
frame.getPrev().pushOperand(Type.GetType("System.Boolean"));
break;
}
case 'C':{
frame.getPrev().pushOperand(Type.GetType("System.Char"));
break;
}
default:
{
throw new ToyVMException("Not handling " + typeChar,frame);
}
}
}
/**
* Returns full path to file based on short name of lib
*/
public static void mapLibraryName(StackFrame frame)
{
Heap.HeapReference nameRef = (Heap.HeapReference) frame.getLocalVariables()[0];
string shortName = Heap.GetInstance().GetStringVal(nameRef);
string fullName = "lib"+shortName+".so";
frame.getPrev().pushOperand(Heap.GetInstance().createString(ToyVMClassLoader.loadClass("java/lang/String"),fullName));
}
// Create or return HeapRef corresponding to this string
public HeapReference createString(ClassFile stringType, ConstantPoolInfo_String stringConst)
{
// the reason this method exists is because I suck and can't seem
// to properly output unicode characters without breaking everything
string stringVal = stringConst.getValue();
if (stringMap[stringVal] == null){
HeapReference stringRef = newInstance(stringType);
StackFrame stringFrame = new StackFrame(stringType.getConstantPool());
// Attempt to initialize using the character array
MethodInfo stringInit = stringType.getMethod("<init>","([C)V");
if (stringInit == null){
throw new Exception("Unable to find init method for string");
}
stringFrame.setMethod(stringType,stringInit);
stringFrame.getLocalVariables()[0] = stringRef;
stringFrame.getLocalVariables()[1] = stringConst;
string printableChars = "";
//stringRef.isUnicode = true; // I suck
char[] chars = stringVal.ToCharArray();
for (int i = 0; i < chars.Length; i++){
if (chars[i] > 13 && chars[i] < 127){
printableChars += chars[i];
}
}
if (log.IsDebugEnabled) log.DebugFormat("stringval1:{0}",printableChars);
//if (log.IsDebugEnabled) log.DebugFormat(stringVal);
// if (log.IsDebugEnabled) log.DebugFormat("U:" + stringRef.isUnicode);
stringType.execute("<init>","([C)V",stringFrame);
stringMap.Add(stringVal,stringRef);
reverseStringMap.Add(stringRef,stringVal);
}
return (HeapReference) stringMap[stringVal];
}
/**
* int write(int fd,ByteBuffer src)
*/
public static void write(StackFrame frame)
{
int fd = (int)frame.getLocalVariables()[1];
Heap.HeapReference byteBufRef = (Heap.HeapReference) frame.getLocalVariables()[2];
if (fd != 2){
throw new ToyVMException("Can only handle stdout(2), have " + fd, frame);
}
// need to get the actual byte array
StackFrame frame2 = new StackFrame(frame);
ClassFile byteBufferClass = byteBufRef.type;
string getterType = "()[B";
string getterName = "array";
MethodInfo method = byteBufferClass.getMethod(getterName,getterType);
if (method == null){
foreach (MethodInfo m in byteBufferClass.getMethods()){
if (log.IsDebugEnabled) log.DebugFormat(m.ToString());
}
throw new ToyVMException("Unable to find " + getterName + getterType,frame);
}
frame2.setMethod(byteBufferClass,method);
frame2.getLocalVariables()[0] = byteBufRef;
byteBufferClass.execute(getterName,getterType,frame2);
Heap.HeapReference byteArrRef = (Heap.HeapReference) frame.popOperand();
byte[] bytes = (byte[]) byteArrRef.obj;
for (int i = 0; i < bytes.Length; i++){
Console.Write((char)bytes[i]);
}
frame.getPrev().pushOperand(bytes.Length);
}
public static void isFile(StackFrame frame)
{
Heap.HeapReference fileRef = (Heap.HeapReference) frame.getLocalVariables()[0];
ToyVMObject fileObj = (ToyVMObject)fileRef.obj;
Heap.HeapReference filenameCharRef = (Heap.HeapReference)fileObj.getFieldValue("value",ConstantPoolInfo_FieldRef.TYPE_REF);
System.Char[] filenameChars = (System.Char[]) filenameCharRef.obj;
string filename = new string(filenameChars);
if (log.IsDebugEnabled) log.DebugFormat("Determining if {0} is a file or not",filename);
FileInfo file = new FileInfo(filename);
frame.getPrev().pushOperand(((file.Exists && (file.Attributes & FileAttributes.Directory) == 0) ? 1 : 0));
}
public HeapReference createString(ClassFile stringType, string stringVal)
{
if (stringMap[stringVal] == null){
HeapReference stringRef = newInstance(stringType);
StackFrame stringFrame = new StackFrame(stringType.getConstantPool());
// Attempt to initialize using the character array
MethodInfo stringInit = stringType.getMethod("<init>","([C)V");
if (stringInit == null){
throw new Exception("Unable to find init method for string");
}
stringFrame.setMethod(stringType,stringInit);
stringFrame.getLocalVariables()[0] = stringRef;
stringFrame.getLocalVariables()[1] = stringVal;
// stringRef.isUnicode = containsUnicode(stringVal);
char[] chars = stringVal.ToCharArray();
string printableChars = "";
//stringRef.isUnicode = true; // I suck
for (int i = 0; i < chars.Length; i++){
if (chars[i] > 13 && chars[i] < 127){
printableChars += chars[i];
}
}
if (log.IsDebugEnabled) log.DebugFormat("stringval2:{0}",printableChars);
stringType.execute("<init>","([C)V",stringFrame);
stringMap.Add(stringVal,stringRef);
reverseStringMap.Add(stringRef,stringVal);
}
return (HeapReference) stringMap[stringVal];
}
/**
* array copy:
* this: void arraycopy(Object source,int start,Object dest,int start,int length)
*/
public static void arraycopy(StackFrame frame)
{
if (log.IsDebugEnabled) log.DebugFormat("Performing array copy");
Object source = frame.getLocalVariables()[0];
if (log.IsDebugEnabled) log.DebugFormat("Source is {0}",source);
int start = (int)frame.getLocalVariables()[1];
Object target = frame.getLocalVariables()[2];
if (log.IsDebugEnabled) log.DebugFormat("target is {0}",target);
int end = (int)frame.getLocalVariables()[3];
int length = (int)frame.getLocalVariables()[4];
Heap.HeapReference arrayRef = (Heap.HeapReference) target;
if (log.IsDebugEnabled) log.DebugFormat("arrayref obj is {0}",arrayRef.obj);
if (arrayRef.obj is System.Char[]){
char[] targetChars = (System.Char[])(arrayRef.obj);
char[] sourceChars;
if (source is string){
sourceChars = ((string)source).ToCharArray();
}
else if (source is ConstantPoolInfo_String){
sourceChars = ((ConstantPoolInfo_String)source).getValue().ToCharArray();
}
else if (source is Heap.HeapReference){
Heap.HeapReference heapRef = (Heap.HeapReference)source;
if (heapRef.isArray && heapRef.isPrimitive && heapRef.primitiveType.FullName.Equals("System.Char")){
sourceChars = (System.Char[])heapRef.obj;
}
else {
throw new ToyVMException("Can only handle char arrays, have " + heapRef,frame);
}
}
else {
throw new ToyVMException("Can only copy strings, have " + source.GetType(),frame);
}
System.Array.Copy(sourceChars,start,targetChars,end,length);
string printableChars = "";
//stringRef.isUnicode = true; // I suck
for (int i = 0; i < targetChars.Length; i++){
if (targetChars[i] > 13 && targetChars[i] < 127){
printableChars += targetChars[i];
}
}
//if (log.IsDebugEnabled) log.DebugFormat("Target is now: {0}",printableChars);
}
else if (arrayRef.obj is System.Byte[]){
byte[] targetBytes = (System.Byte[]) arrayRef.obj;
Heap.HeapReference sourceRef = (Heap.HeapReference) source;
byte[] sourceBytes = (System.Byte[]) sourceRef.obj;
System.Array.Copy(sourceBytes,start,targetBytes,end,length);
}
else {
throw new ToyVMException("Target is neither a byte or a char: " + arrayRef,frame);
}
}
/**
* Calculate hash code... currently uses C# version
* this: int identityHashCode(Object obj)
*/
public static void identityHashCode(StackFrame frame)
{
if (log.IsDebugEnabled) log.DebugFormat("Calculating hash for {0}",frame.getLocalVariables()[0]);
Object obj = frame.getLocalVariables()[0];
// valid?
if (obj is NullValue){
frame.getPrev().pushOperand(0);
}
else {
frame.getPrev().pushOperand(((Heap.HeapReference)obj).address);
}
}
public static void getName(StackFrame frame)
{
ClassFile clazz = (ClassFile) frame.getLocalVariables()[0];
frame.getPrev().pushOperand(Heap.GetInstance().createString(ToyVMClassLoader.loadClass("java/lang/String"),clazz.GetName()));
}
/**
* Sets the core default system properties
*/
public static void preInit(StackFrame sf)
{
Heap.HeapReference propsObj = (Heap.HeapReference) sf.getLocalVariables()[0];
ClassFile stringType = ToyVMClassLoader.loadClass("java/lang/String");
ClassFile propsClass = (ClassFile)(propsObj.type);
string setterType = "(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/Object;";
string setterName = "setProperty";
MethodInfo method = propsClass.getMethod(setterName,setterType);
if (method == null){
foreach (MethodInfo m in propsClass.getMethods()){
if (log.IsDebugEnabled) log.DebugFormat(m.ToString());
}
throw new ToyVMException("Unable to find " + setterName + setterType,sf);
}
StackFrame frame = new StackFrame(sf);
frame.setMethod(propsClass,method);
Heap.HeapReference prop = Heap.GetInstance().createString(stringType,"java.version");
Heap.HeapReference val = Heap.GetInstance().createString(stringType,"5");
frame.getLocalVariables()[0] = propsObj;
frame.getLocalVariables()[1] = prop;
frame.getLocalVariables()[2] = val;
propsClass.execute(setterName,setterType,frame);
prop = Heap.GetInstance().createString(stringType,"java.boot.class.path");
val = Heap.GetInstance().createString(stringType,"/home/jdewald/ToyVM/ToyVM/openjdk");
frame.getLocalVariables()[0] = propsObj;
frame.getLocalVariables()[1] = prop;
frame.getLocalVariables()[2] = val;
propsClass.execute(setterName,setterType,frame);
prop = Heap.GetInstance().createString(stringType,"java.vendor");
val = Heap.GetInstance().createString(stringType,"jdewald");
frame.getLocalVariables()[0] = propsObj;
frame.getLocalVariables()[1] = prop;
frame.getLocalVariables()[2] = val;
propsClass.execute(setterName,setterType,frame);
prop = Heap.GetInstance().createString(stringType,"java.vendor.url");
val = Heap.GetInstance().createString(stringType,"http://quay.wordpress.com");
frame.getLocalVariables()[0] = propsObj;
frame.getLocalVariables()[1] = prop;
frame.getLocalVariables()[2] = val;
propsClass.execute(setterName,setterType,frame);
prop = Heap.GetInstance().createString(stringType,"java.vm.vendor");
val = Heap.GetInstance().createString(stringType,"jdewald");
frame.getLocalVariables()[0] = propsObj;
frame.getLocalVariables()[1] = prop;
frame.getLocalVariables()[2] = val;
propsClass.execute(setterName,setterType,frame);
prop = Heap.GetInstance().createString(stringType,"java.vm.name");
val = Heap.GetInstance().createString(stringType,"ToyVM");
frame.getLocalVariables()[0] = propsObj;
frame.getLocalVariables()[1] = prop;
frame.getLocalVariables()[2] = val;
propsClass.execute(setterName,setterType,frame);
prop = Heap.GetInstance().createString(stringType,"java.vm.vendor.url");
val = Heap.GetInstance().createString(stringType,"http://quay.wordpress.com");
frame.getLocalVariables()[0] = propsObj;
frame.getLocalVariables()[1] = prop;
frame.getLocalVariables()[2] = val;
propsClass.execute(setterName,setterType,frame);
prop = Heap.GetInstance().createString(stringType,"java.vm.specification.version");
val = Heap.GetInstance().createString(stringType,"2");
frame.getLocalVariables()[0] = propsObj;
frame.getLocalVariables()[1] = prop;
frame.getLocalVariables()[2] = val;
propsClass.execute(setterName,setterType,frame);
prop = Heap.GetInstance().createString(stringType,"java.vm.specification.vendor");
val = Heap.GetInstance().createString(stringType,"Sun");
frame.getLocalVariables()[0] = propsObj;
frame.getLocalVariables()[1] = prop;
frame.getLocalVariables()[2] = val;
propsClass.execute(setterName,setterType,frame);
prop = Heap.GetInstance().createString(stringType,"java.vm.specification.url");
val = Heap.GetInstance().createString(stringType,"http://quay.wordpress.com");
frame.getLocalVariables()[0] = propsObj;
frame.getLocalVariables()[1] = prop;
frame.getLocalVariables()[2] = val;
propsClass.execute(setterName,setterType,frame);
prop = Heap.GetInstance().createString(stringType,"java.vm.specification.version");
val = Heap.GetInstance().createString(stringType,"http://quay.wordpress.com");
frame.getLocalVariables()[0] = propsObj;
frame.getLocalVariables()[1] = prop;
frame.getLocalVariables()[2] = val;
propsClass.execute(setterName,setterType,frame);
prop = Heap.GetInstance().createString(stringType,"java.class.version");
val = Heap.GetInstance().createString(stringType,"49");
frame.getLocalVariables()[0] = propsObj;
frame.getLocalVariables()[1] = prop;
frame.getLocalVariables()[2] = val;
propsClass.execute(setterName,setterType,frame);
prop = Heap.GetInstance().createString(stringType,"java.home");
val = Heap.GetInstance().createString(stringType,"/home/jdewald/ToyVM/ToyVM");
frame.getLocalVariables()[0] = propsObj;
frame.getLocalVariables()[1] = prop;
frame.getLocalVariables()[2] = val;
propsClass.execute(setterName,setterType,frame);
prop = Heap.GetInstance().createString(stringType,"java.class.path");
val = Heap.GetInstance().createString(stringType,"/home/jdewald/ToyVM/ToyVM/openjdk");
frame.getLocalVariables()[0] = propsObj;
frame.getLocalVariables()[1] = prop;
frame.getLocalVariables()[2] = val;
propsClass.execute(setterName,setterType,frame);
prop = Heap.GetInstance().createString(stringType,"java.library.path");
val = Heap.GetInstance().createString(stringType,"/home/jdewald/nativelibs");
frame.getLocalVariables()[0] = propsObj;
frame.getLocalVariables()[1] = prop;
frame.getLocalVariables()[2] = val;
propsClass.execute(setterName,setterType,frame);
prop = Heap.GetInstance().createString(stringType,"java.io.tmpdir");
val = Heap.GetInstance().createString(stringType,"/tmp");
frame.getLocalVariables()[0] = propsObj;
frame.getLocalVariables()[1] = prop;
frame.getLocalVariables()[2] = val;
propsClass.execute(setterName,setterType,frame);
prop = Heap.GetInstance().createString(stringType,"os.name");
val = Heap.GetInstance().createString(stringType,"Linux");
frame.getLocalVariables()[0] = propsObj;
frame.getLocalVariables()[1] = prop;
frame.getLocalVariables()[2] = val;
propsClass.execute(setterName,setterType,frame);
prop = Heap.GetInstance().createString(stringType,"os.arch");
val = Heap.GetInstance().createString(stringType,"i386");
frame.getLocalVariables()[0] = propsObj;
frame.getLocalVariables()[1] = prop;
frame.getLocalVariables()[2] = val;
propsClass.execute(setterName,setterType,frame);
prop = Heap.GetInstance().createString(stringType,"file.separator");
val = Heap.GetInstance().createString(stringType,"/");
frame.getLocalVariables()[0] = propsObj;
frame.getLocalVariables()[1] = prop;
frame.getLocalVariables()[2] = val;
propsClass.execute(setterName,setterType,frame);
prop = Heap.GetInstance().createString(stringType,"path.separator");
val = Heap.GetInstance().createString(stringType,":");
frame.getLocalVariables()[0] = propsObj;
frame.getLocalVariables()[1] = prop;
frame.getLocalVariables()[2] = val;
propsClass.execute(setterName,setterType,frame);
prop = Heap.GetInstance().createString(stringType,"line.separator");
val = Heap.GetInstance().createString(stringType,"\n");
frame.getLocalVariables()[0] = propsObj;
frame.getLocalVariables()[1] = prop;
frame.getLocalVariables()[2] = val;
propsClass.execute(setterName,setterType,frame);
prop = Heap.GetInstance().createString(stringType,"user.name");
val = Heap.GetInstance().createString(stringType,"jdewald");
frame.getLocalVariables()[0] = propsObj;
frame.getLocalVariables()[1] = prop;
frame.getLocalVariables()[2] = val;
propsClass.execute(setterName,setterType,frame);
prop = Heap.GetInstance().createString(stringType,"user.home");
val = Heap.GetInstance().createString(stringType,"/home/jdewald");
frame.getLocalVariables()[0] = propsObj;
frame.getLocalVariables()[1] = prop;
frame.getLocalVariables()[2] = val;
propsClass.execute(setterName,setterType,frame);
prop = Heap.GetInstance().createString(stringType,"user.dir");
val = Heap.GetInstance().createString(stringType,Environment.CurrentDirectory);
frame.getLocalVariables()[0] = propsObj;
frame.getLocalVariables()[1] = prop;
frame.getLocalVariables()[2] = val;
propsClass.execute(setterName,setterType,frame);
prop = Heap.GetInstance().createString(stringType,"gnu.cpu.endian");
val = Heap.GetInstance().createString(stringType,"little");
frame.getLocalVariables()[0] = propsObj;
frame.getLocalVariables()[1] = prop;
frame.getLocalVariables()[2] = val;
propsClass.execute(setterName,setterType,frame);
}