super(c, in, cp);
local = new Expr[maxLocals];
stack = new Expr[maxStack];
- for(int i=0; i<this.method.getNumArgs(); i++)
- local[i] = new Argument("arg"+i, this.method.getArgType(i));
+ int n=0;
+ if (!isStatic())
+ local[n++] = new Argument("this",method.getDeclaringClass());
+ for(int i=0;i<this.method.getNumArgs(); i++)
+ local[n++] = new Argument("arg"+i, this.method.getArgType(i));
for(int i=0; i<size(); i++) {
int op = get(i);
Object arg = getArg(i);
- Object o = addOp(op, arg);
- if (o != null) {
- ops[numOps] = o;
- ofs[numOps++] = i;
- }
- }
- }
-
- public void debugBodyToString(StringBuffer sb) {
- StringBuffer sb0 = new StringBuffer();
- super.debugBodyToString(sb0);
- StringTokenizer st = new StringTokenizer(sb0.toString(), "\n");
- String[] lines = new String[st.countTokens()];
- for(int i=0; i<lines.length; i++) lines[i] = st.nextToken();
- for(int j=0; j<ofs[0]; j++) {
- String s = " /* " + lines[j].trim();
- while(s.length() < 50) s += " ";
- s += " */";
- sb.append(s);
- sb.append("\n");
- }
- for(int i=0; i<numOps; i++) {
- String s = " /* " + lines[ofs[i]].trim();
- while(s.length() < 50) s += " ";
- s += " */ ";
- s += ops[i].toString();
- sb.append(s);
- sb.append(";\n");
- for(int j=ofs[i]+1; j<(i==numOps-1?size():ofs[i+1]); j++) {
- s = " /* " + lines[j].trim();
- while(s.length() < 50) s += " ";
- s += " */";
- sb.append(s);
- sb.append("\n");
+ try {
+ Object o = addOp(op, arg);
+ if (o != null) {
+ ops[numOps] = o;
+ ofs[numOps++] = i;
+ }
+ } catch(RuntimeException e) {
+ System.err.println("Had a problem at PC: " + i + " of " + method);
+ e.printStackTrace();
+ throw new IOException("invalid class file");
}
}
}
private int sp = 0;
private Expr push(Expr e) {
- if(sp == stack.length) {
+ if (sp == stack.length) {
for(int i=0;i<stack.length;i++) System.err.println("Stack " + i + ": " + stack[i]);
throw new IllegalStateException("stack overflow (" + stack.length + ")");
}
- if(e.getType() == Type.VOID) throw new IllegalArgumentException("can't push a void");
+ if (e.getType() == Type.VOID) throw new IllegalArgumentException("can't push a void");
return stack[sp++] = e;
}
private Expr pop() {
- if(sp == 0) throw new IllegalStateException("stack underflow");
+ if (sp == 0) throw new IllegalStateException("stack underflow");
return stack[--sp];
}
+
+ private Op seqPush(Expr e) {
+ push(e);
+ return new Seq(e);
+ }
// SSA-node classes /////////////////////////////////////////////////////////////////////////////////////////
return name;
}
}
-
+
+ /** A sequence point. expr is evaluated for side effects at this point, this does not generate data
+ Expressions that haven't been evaluated with Seq are evaluated when they are first encountered
+ */
+ public class Seq extends Op {
+ private final Expr expr;
+ public String toString() { return expr.toString(); }
+ public Seq(Expr expr) { this.expr = expr; }
+ }
+
/** an operation which generates data */
public abstract class Expr extends Op {
//public abstract Expr[] contributors(); // not implemented yet
/** every JSSA.Expr either remembers its type _OR_ knows how to figure it out (the latter is preferred to eliminate
* redundant information that could possibly "disagree" with itself -- this happened a LOT in Soot) */
public abstract Type getType();
+
+ public final String toString() { return exprToString(this); }
+ public String _toString() { return super.toString(); } // Adam is going to hate me for this (yes; why is this here?)
}
/**
public final String name;
public final Type t;
public Argument(String name, Type t) { this.name = name; this.t = t; }
- public String toString() { return name; }
+ public String _toString() { return name; }
public Type getType() { return t; }
}
public class Not extends Expr {
public final Expr e;
public Not(Expr e) {
- if(e.getType() != Type.BOOLEAN) throw new IllegalArgumentException("not needs a boolean expression");
+ if (e.getType() != Type.BOOLEAN) throw new IllegalArgumentException("not needs a boolean expression");
this.e = e;
}
public Type getType() { return Type.BOOLEAN; }
- public String toString() { return "!(" + e + ")"; }
+ public String _toString() { return "!(" + e + ")"; }
}
public class Neg extends Expr {
public final Expr e;
public Neg(Expr e) {
- if(!e.getType().isPrimitive()) throw new IllegalArgumentException("can only negate a primitive");
+ if (!e.getType().isPrimitive()) throw new IllegalArgumentException("can only negate a primitive");
this.e = e;
}
public Type getType() { return e.getType(); }
- public String toString() { return "- (" + e + ")"; }
+ public String _toString() { return "- (" + e + ")"; }
}
// Binary Operations //////////////////////////////////////////////////////////////////////////////
public final Expr e2;
private final String show;
public BinExpr(Expr e1, Expr e2, String show) { this.e1 = e1; this.e2 = e2; this.show = show; }
- public String toString() {
+ public String _toString() {
// FEATURE: should we be doing some precedence stuff here? probably no worth it for debugging output
return "(" + e1 + show + e2 + ")";
}
public class Eq extends Comparison {
public Eq(Expr e1, Expr e2) {
super(e1, e2, "==");
- if(e1.getType().isPrimitive() != e2.getType().isPrimitive())
+ if (e1.getType().isPrimitive() != e2.getType().isPrimitive())
throw new IllegalArgumentException("type mismatch");
- if(e1.getType().isPrimitive() && e1.getType() != e2.getType())
+ if (e1.getType().isPrimitive() && e1.getType() != e2.getType())
throw new IllegalArgumentException("type mismatch");
// FEATURE: Check if we can compare these classes
}
public class PrimitiveComparison extends Comparison {
public PrimitiveComparison(Expr e1, Expr e2, String show) {
super(e1, e2, show);
- if(!e1.getType().isPrimitive() || e1.getType() != e2.getType()) throw new IllegalArgumentException("type mismatch");
+ if (!e1.getType().isPrimitive() || e1.getType() != e2.getType()) throw new IllegalArgumentException("type mismatch");
}
}
public class BinMath extends BinExpr {
public BinMath(Expr e1, Expr e2, String show) {
super(e2, e1, show);
- if(e1.getType() != e2.getType()) throw new IllegalArgumentException("types disagree");
+ if (e1.getType() != e2.getType()) throw new IllegalArgumentException("types disagree");
}
public Type getType() { return e1.getType(); }
}
public BitShiftExpr(Expr e1, Expr e2, String show) {
super(e1,e2,show);
Type t = e1.getType();
- if(t != Type.INT && t != Type.LONG) throw new IllegalArgumentException("type mismatch");
- if(e2.getType() != Type.INT) throw new IllegalArgumentException("type mismatch");
+ if (t != Type.INT && t != Type.LONG) throw new IllegalArgumentException("type mismatch");
+ if (e2.getType() != Type.INT) throw new IllegalArgumentException("type mismatch");
}
public Type getType() { return e1.getType(); }
}
final Expr e;
final Type t;
public Cast(Expr e, Type t) {
- if(e.getType().isRef() != t.isRef()) throw new IllegalArgumentException("invalid cast");
+ if (e.getType().isRef() != t.isRef()) throw new IllegalArgumentException("invalid cast");
// FEATURE: Check that one is a subclass of the other if it is a ref
this.e = e;
this.t = t;
final Expr e;
final Type.Ref t;
public InstanceOf(Expr e, Type.Ref t) {
- if(!e.getType().isRef()) throw new IllegalArgumentException("can't do an instanceof check on a non-ref");
+ if (!e.getType().isRef()) throw new IllegalArgumentException("can't do an instanceof check on a non-ref");
this.e = e;
this.t = t;
}
public class Throw extends Op {
public final Expr e;
public Throw(Expr e) {
- if(!e.getType().isRef()) throw new IllegalArgumentException("can't throw a non ref");
+ if (!e.getType().isRef()) throw new IllegalArgumentException("can't throw a non ref");
// FEATURE: CHeck that it is a subclass of Throwable
this.e = e;
}
public final Type.Class t;
public Type getType() { return t; }
public New(Type.Class t) { this.t = t; }
+ public String _toString() { return "new " + t + "()"; }
}
public class NewArray extends Expr {
public NewArray(Type.Array t, Expr[] dims) { this.t = t; this.dims = dims; }
public NewArray(Type.Array t, Expr dim) { this(t,new Expr[]{dim}); }
public Type getType() { return t; }
+ public String _toString() {
+ Type base = t;
+ int totalDims = 0;
+ while(base.isArray()) {
+ totalDims++;
+ base = base.asArray().getElementType();
+ }
+ StringBuffer sb = new StringBuffer("new " + base);
+ for(int i=0;i<totalDims;i++)
+ sb.append("[" + (i < dims.length ? dims[i].toString() : "") + "]");
+ return sb.toString();
+ }
}
public class Return extends Op {
final Expr e;
public Return() { this(VOID_EXPR); }
- public Return(Expr e) { this.e = e; }
+ public Return(Expr e) {
+ this.e = e;
+ if (Type.unify(method.getReturnType(),e.getType()) != method.getReturnType())
+ throw new IllegalArgumentException("type mismatch");
+ }
public String toString() { return e.getType() == Type.VOID ? "return" : ("return "+e.toString()); }
}
public Type getType() { return f.getType(); }
public Get(Type.Class.Field f) { this(f, null); }
public Get(Type.Class.Field f, Expr e) { this.f = f; this.e = e; }
- public String toString() {
+ public String _toString() {
return
(e!=null
? e+"."+f.name
public class ArrayPut extends Op {
final Expr e, i, v;
- public ArrayPut(Expr e, Expr i, Expr v) { this.e = e; this.i = i; this.v = v; }
+ public ArrayPut(Expr v, Expr i, Expr e) { this.e = e; this.i = i; this.v = v; }
+ public String toString() { return e + "[" + i + "] := " + v; }
}
public class ArrayGet extends Expr {
final Expr e, i;
- public ArrayGet(Expr e, Expr i) { this.e = e; this.i = i; }
+ public ArrayGet(Expr i, Expr e) { this.e = e; this.i = i; }
public Type getType() { return e.getType().asArray().getElementType(); }
+ public String _toString() { return e + "[" + i + "]"; }
}
public class ArrayLength extends Expr {
sb.append(")");
}
- public String toString() {
+ public String _toString() {
StringBuffer sb = new StringBuffer();
sb.append(method.getDeclaringClass() == JSSA.this.method.getDeclaringClass()
? method.name
public class InvokeStatic extends Invoke { public InvokeStatic(Type.Class.Method m, Expr[] a) { super(m,a); } }
public class InvokeSpecial extends InvokeVirtual {
public InvokeSpecial(Type.Class.Method m, Expr[] a, Expr e) { super(m,a,e); }
- public String toString() {
- StringBuffer sb = new StringBuffer();
- sb.append(method.name.equals("<init>") ? "super" : method.name);
- args(sb);
- return sb.toString();
- }
+ public String _toString() { return _toString(method.name.equals("<init>") ? method.getDeclaringClass().getName() : method.name); }
}
public class InvokeInterface extends InvokeVirtual{public InvokeInterface(Type.Class.Method m, Expr[] a, Expr e){super(m,a,e);}}
public class InvokeVirtual extends Invoke {
public final Expr instance;
public InvokeVirtual(Type.Class.Method m, Expr[] a, Expr e) { super(m, a); instance = e; }
- public String toString() {
+ public String _toString() { return _toString(method.name); }
+ protected String _toString(String name) {
StringBuffer sb = new StringBuffer();
- sb.append(method.name);
+ sb.append(instance+".");
+ sb.append(name);
args(sb);
return sb.toString();
}
private final Object o;
public Constant(int i) { this(new Integer(i)); }
public Constant(Object o) { this.o = o; }
- public String toString() { return o.toString(); }
+ public String _toString() { return o == null ? "null" : o instanceof String ? "\"" + o + "\"" : o.toString(); }
public Type getType() {
+ if (o == null) return Type.NULL;
if (o instanceof Byte) return Type.BYTE;
if (o instanceof Short) return Type.SHORT;
if (o instanceof Character) return Type.CHAR;
if (o instanceof Long) return Type.LONG;
if (o instanceof Double) return Type.DOUBLE;
if (o instanceof Float) return Type.FLOAT;
- if (o instanceof ConstantPool.Ent) throw new Error("unimplemented");
- throw new Error("this should not happen");
+ if (o instanceof Integer) return Type.INT;
+ if (o instanceof String) return Type.STRING;
+ throw new IllegalStateException("unknown constant type");
}
}
// Stack manipulations //////////////////////////////////////////////////////////////////////////////
- case ACONST_NULL: return stack[sp++] = new Constant(null);
- case ICONST_M1: return stack[sp++] = new Constant(-1);
+ case ACONST_NULL: push(new Constant(null)); return null;
+ case ICONST_M1: push(new Constant(-1)); return null;
case ICONST_0: case LCONST_0: case FCONST_0: case DCONST_0: push(new Constant(0)); return null;
case ICONST_1: case LCONST_1: case FCONST_1: case DCONST_1: push(new Constant(1)); return null;
case ICONST_2: case FCONST_2: push(new Constant(2)); return null;
case ICONST_3: push(new Constant(3)); return null;
case ICONST_4: push(new Constant(4)); return null;
case ICONST_5: push(new Constant(5)); return null;
- case ILOAD: case LLOAD: case FLOAD: case DLOAD: case ALOAD: return push(local[i1]);
- case ILOAD_0: case LLOAD_0: case FLOAD_0: case DLOAD_0: case ALOAD_0: return push(local[0]);
- case ILOAD_1: case LLOAD_1: case FLOAD_1: case DLOAD_1: case ALOAD_1: return push(local[1]);
- case ALOAD_2: case DLOAD_2: case FLOAD_2: case LLOAD_2: case ILOAD_2: return push(local[2]);
- case ILOAD_3: case LLOAD_3: case FLOAD_3: case DLOAD_3: case ALOAD_3: return push(local[3]);
+ case ILOAD: case LLOAD: case FLOAD: case DLOAD: case ALOAD: push(local[i1]); return null;
+ case ILOAD_0: case LLOAD_0: case FLOAD_0: case DLOAD_0: case ALOAD_0: push(local[0]); return null;
+ case ILOAD_1: case LLOAD_1: case FLOAD_1: case DLOAD_1: case ALOAD_1: push(local[1]); return null;
+ case ALOAD_2: case DLOAD_2: case FLOAD_2: case LLOAD_2: case ILOAD_2: push(local[2]); return null;
+ case ILOAD_3: case LLOAD_3: case FLOAD_3: case DLOAD_3: case ALOAD_3: push(local[3]); return null;
case ISTORE: case LSTORE: case FSTORE: case DSTORE: case ASTORE: local[i1] = pop(); return null;
case ISTORE_0: case LSTORE_0: case FSTORE_0: case DSTORE_0: case ASTORE_0: local[0] = pop(); return null;
case ISTORE_1: case LSTORE_1: case FSTORE_1: case DSTORE_1: case ASTORE_1: local[1] = pop(); return null;
case ASTORE_2: case DSTORE_2: case FSTORE_2: case LSTORE_2: case ISTORE_2: local[2] = pop(); return null;
case ISTORE_3: case LSTORE_3: case FSTORE_3: case DSTORE_3: case ASTORE_3: local[3] = pop(); return null;
- case POP: stack[--sp] = null;
- case POP2: stack[--sp] = null; stack[--sp] = null; /** fixme: pops a WORD, not an item */
- case DUP: stack[sp] = stack[sp-1]; sp++;
- case DUP2: stack[sp] = stack[sp-2]; stack[sp+1] = stack[sp-1]; sp+=2;
+ case POP: pop(); return null;
+ case POP2: pop(); pop(); return null;
+ case DUP: push(stack[sp-1]); return null;
+ case DUP2: push(stack[sp-2]); push(stack[sp-2]); return null;
// Conversions //////////////////////////////////////////////////////////////////////////////
// Array manipulations //////////////////////////////////////////////////////////////////////////////
case IALOAD: case LALOAD: case FALOAD: case DALOAD: case AALOAD:
- case BALOAD: case CALOAD: case SALOAD: push(new ArrayGet(pop(), pop())); return null;
+ case BALOAD: case CALOAD: case SALOAD:
+ return seqPush(new ArrayGet(pop(), pop()));
case IASTORE: case LASTORE: case FASTORE: case DASTORE: case AASTORE:
- case BASTORE: case CASTORE: case SASTORE: return new ArrayPut(pop(), pop(), pop());
+ case BASTORE: case CASTORE: case SASTORE:
+ return new ArrayPut(pop(), pop(), pop());
// Invocation //////////////////////////////////////////////////////////////////////////////
Type.Class.Method method = (Type.Class.Method)arg;
Expr args[] = new Expr[method.getNumArgs()];
for(int i=0; i<args.length; i++) args[args.length-i-1] = pop();
+ Expr ret;
switch(op) {
- case INVOKEVIRTUAL: return push(new InvokeVirtual(method, args, pop()));
- case INVOKEINTERFACE: return push(new InvokeInterface(method, args, pop()));
- case INVOKESPECIAL: return push(new InvokeSpecial(method, args, pop()));
- case INVOKESTATIC: return push(new InvokeStatic(method, args));
+ case INVOKEVIRTUAL: ret = new InvokeVirtual(method, args, pop()); break;
+ case INVOKEINTERFACE: ret = new InvokeInterface(method, args, pop()); break;
+ case INVOKESPECIAL: ret = new InvokeSpecial(method, args, pop()); break;
+ case INVOKESTATIC: ret = new InvokeStatic(method, args); break;
+ default: throw new Error("should never happen");
}
+ if (ret.getType() != Type.VOID) push(ret);
+ return new Seq(ret);
}
// Field Access //////////////////////////////////////////////////////////////////////////////
- case GETSTATIC: push(new Get((Type.Class.Field)arg, null)); return null;
+ case GETSTATIC: return seqPush(new Get((Type.Class.Field)arg, null));
case PUTSTATIC: return new Put((Type.Class.Field)arg, pop(), null);
- case GETFIELD: push(new Get((Type.Class.Field)arg, pop())); return null;
+ case GETFIELD: return seqPush(new Get((Type.Class.Field)arg, pop()));
case PUTFIELD: return new Put((Type.Class.Field)arg, pop(), pop());
// Allocation //////////////////////////////////////////////////////////////////////////////
case 11: base = Type.LONG; break;
default: throw new IllegalStateException("invalid array type");
}
- push(new NewArray(base.makeArray(),pop()));
- return null;
+ return seqPush(new NewArray(base.makeArray(),pop()));
}
case ANEWARRAY: push(new NewArray(((Type.Ref)arg).makeArray(), pop())); return null;
case MULTIANEWARRAY: {
MethodGen.MultiANewArray mana = (MethodGen.MultiANewArray) arg;
Expr[] dims = new Expr[mana.dims];
for(int i=0;i<dims.length;i++) dims[i] = pop();
- push(new NewArray(mana.type, dims));
- return null;
+ return seqPush(new NewArray(mana.type, dims));
}
- case ARRAYLENGTH: push(new ArrayLength(pop())); return null;
+ case ARRAYLENGTH: return seqPush(new ArrayLength(pop()));
// Runtime Type information //////////////////////////////////////////////////////////////////////////////
- case CHECKCAST: push(new Cast(pop(), (Type.Ref)arg)); return null;
+ case CHECKCAST: return seqPush(new Cast(pop(), (Type.Ref)arg));
case INSTANCEOF: push(new InstanceOf(pop(), (Type.Ref)arg)); return null;
case LDC: case LDC_W: case LDC2_W: push(new Constant(arg)); return null;
- case BIPUSH: push(new Constant(i1)); // FIXME return null;
- case SIPUSH: push(new Constant(i1)); // FIXME return null;
+ case BIPUSH: push(new Constant((Integer)arg)); return null;
+ case SIPUSH: push(new Constant((Integer)arg)); return null;
- case TABLESWITCH: new Branch((MethodGen.Switch)arg);
- case LOOKUPSWITCH: new Branch((MethodGen.Switch)arg);
+ case TABLESWITCH: return new Branch((MethodGen.Switch)arg);
+ case LOOKUPSWITCH: return new Branch((MethodGen.Switch)arg);
/*
case MONITORENTER: Op.monitorEnter(pop());
}
}
+
+ public void debugBodyToString(StringBuffer sb) {
+ StringBuffer sb0 = new StringBuffer();
+ super.debugBodyToString(sb0);
+ StringTokenizer st = new StringTokenizer(sb0.toString(), "\n");
+ String[] lines = new String[st.countTokens()];
+ for(int i=0; i<lines.length; i++) lines[i] = st.nextToken();
+ for(int j=0; j<ofs[0]; j++) {
+ String s = " /* " + lines[j].trim();
+ while(s.length() < 50) s += " ";
+ s += " */";
+ sb.append(s);
+ sb.append("\n");
+ }
+
+ bindingMap = new IdentityHashMap();
+ nextVar = 0;
+
+ for(int i=0; i<numOps; i++) {
+ String s = " /* " + lines[ofs[i]].trim();
+ while(s.length() < 50) s += " ";
+ s += " */ ";
+ s += ops[i].toString();
+ sb.append(s);
+ sb.append(";\n");
+ for(int j=ofs[i]+1; j<(i==numOps-1?size():ofs[i+1]); j++) {
+ s = " /* " + lines[j].trim();
+ while(s.length() < 50) s += " ";
+ s += " */";
+ sb.append(s);
+ sb.append("\n");
+ }
+ }
+ }
+
+ private Map bindingMap;
+ private int nextVar;
+ String exprToString(Expr e) {
+ if (e instanceof Constant) return e._toString();
+ String s = (String)bindingMap.get(e);
+ if (s != null) return s;
+ String prefix;
+ if (e.getType() == Type.VOID) return e._toString();
+ else if (e.getType() == Type.DOUBLE || e.getType() == Type.FLOAT) prefix = "f";
+ else if (e.getType().isPrimitive()) prefix = "i";
+ else if (e.getType().isArray()) prefix = "a";
+ else prefix = "o";
+ s = prefix + (nextVar++);
+ bindingMap.put(e,s);
+ return "(" + s + " = " + e._toString() + ")";
+ }
+
public static void main(String[] args) throws Exception {
InputStream is = Class.forName(args[0]).getClassLoader().getResourceAsStream(args[0].replace('.', '/')+".class");
System.out.println(new ClassFile(new DataInputStream(is), true).toString());
projects / org.ibex.classgen.git / blobdiff