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soot.baf.BafASMBackend Maven / Gradle / Ivy
package soot.baf;
/*-
* #%L
* Soot - a J*va Optimization Framework
* %%
* Copyright (C) 1997 - 2018 Raja Vallée-Rai and others
* %%
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation, either version 2.1 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Lesser Public License for more details.
*
* You should have received a copy of the GNU General Lesser Public
* License along with this program. If not, see
* .
* #L%
*/
import static soot.util.backend.ASMBackendUtils.sizeOfType;
import static soot.util.backend.ASMBackendUtils.slashify;
import static soot.util.backend.ASMBackendUtils.toTypeDesc;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.objectweb.asm.Handle;
import org.objectweb.asm.Label;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;
import soot.AbstractASMBackend;
import soot.ArrayType;
import soot.BooleanType;
import soot.ByteType;
import soot.CharType;
import soot.DoubleType;
import soot.FloatType;
import soot.IntType;
import soot.Local;
import soot.LongType;
import soot.NullType;
import soot.PolymorphicMethodRef;
import soot.RefType;
import soot.ShortType;
import soot.SootClass;
import soot.SootFieldRef;
import soot.SootMethod;
import soot.SootMethodRef;
import soot.StmtAddressType;
import soot.Trap;
import soot.Type;
import soot.TypeSwitch;
import soot.Unit;
import soot.UnitBox;
import soot.Value;
import soot.baf.internal.BafLocal;
import soot.jimple.CaughtExceptionRef;
import soot.jimple.ClassConstant;
import soot.jimple.Constant;
import soot.jimple.ConstantSwitch;
import soot.jimple.DoubleConstant;
import soot.jimple.FloatConstant;
import soot.jimple.IdentityRef;
import soot.jimple.IntConstant;
import soot.jimple.LongConstant;
import soot.jimple.MethodHandle;
import soot.jimple.MethodType;
import soot.jimple.NullConstant;
import soot.jimple.ParameterRef;
import soot.jimple.StringConstant;
import soot.jimple.ThisRef;
import soot.options.Options;
import soot.tagkit.LineNumberTag;
import soot.util.Chain;
/**
* Concrete ASM based bytecode generation backend for the BAF intermediate representation
*
* @author Tobias Hamann, Florian Kuebler, Dominik Helm, Lukas Sommer, Alex Bertram, Andreas Dann
*
*/
public class BafASMBackend extends AbstractASMBackend {
// Contains one Label for every Unit that is the target of a branch or jump
protected final Map branchTargetLabels = new HashMap();
/**
* Returns the ASM Label for a given Unit that is the target of a branch or jump
*
* @param target
* The unit that is the branch target
* @return The Label that specifies this unit
*/
protected Label getBranchTargetLabel(Unit target) {
return branchTargetLabels.get(target);
}
// Contains a mapping of local variables to indices in the local variable
// stack
protected final Map localToSlot = new HashMap();
/**
* Creates a new BafASMBackend with a given enforced java version
*
* @param sc
* The SootClass the bytecode is to be generated for
* @param javaVersion
* A particular Java version enforced by the user, may be 0 for automatic detection, must not be lower than
* necessary for all features used
*/
public BafASMBackend(SootClass sc, int javaVersion) {
super(sc, javaVersion);
}
/*
* (non-Javadoc)
*
* @see soot.AbstractASMBackend#getMinJavaVersion(soot.SootMethod)
*/
@Override
protected int getMinJavaVersion(SootMethod method) {
final BafBody body = getBafBody(method);
int minVersion = Options.java_version_1_1;
// http://hg.openjdk.java.net/jdk8/jdk8/hotspot/file/87ee5ee27509/src/share/vm/classfile/classFileParser.cpp
if (method.getDeclaringClass().isInterface()) {
if (method.isStatic() && !method.isStaticInitializer()) {
minVersion = Math.max(minVersion, Options.java_version_1_8);
}
}
for (Unit u : body.getUnits()) {
if (minVersion == Options.java_version_1_9) {
return minVersion;
}
if (u instanceof DynamicInvokeInst) {
minVersion = Math.max(minVersion, Options.java_version_1_7);
}
if (u instanceof PushInst) {
if (((PushInst) u).getConstant() instanceof ClassConstant) {
minVersion = Math.max(minVersion, Options.java_version_1_5);
}
if (((PushInst) u).getConstant().getType().toQuotedString().equals(PolymorphicMethodRef.METHODHANDLE_SIGNATURE)) {
minVersion = Math.max(minVersion, Options.java_version_1_7);
}
if (((PushInst) u).getConstant().getType().toQuotedString().equals(PolymorphicMethodRef.VARHANDLE_SIGNATURE)) {
minVersion = Math.max(minVersion, Options.java_version_1_9);
}
}
}
return minVersion;
}
/*
* (non-Javadoc)
*
* @see soot.AbstractASMBackend#generateMethodBody(org.objectweb.asm. MethodVisitor, soot.SootMethod)
*/
@Override
protected void generateMethodBody(MethodVisitor mv, SootMethod method) {
BafBody body = getBafBody(method);
Chain instructions = body.getUnits();
/*
* Create a label for each instruction that is the target of some branch
*/
for (UnitBox box : body.getUnitBoxes(true)) {
Unit u = box.getUnit();
if (!branchTargetLabels.containsKey(u)) {
branchTargetLabels.put(u, new Label());
}
}
Label startLabel = null;
if (Options.v().write_local_annotations()) {
startLabel = new Label();
mv.visitLabel(startLabel);
}
/*
* Handle all TRY-CATCH-blocks
*/
for (Trap trap : body.getTraps()) {
// Check if the try-block contains any statement
if (trap.getBeginUnit() != trap.getEndUnit()) {
Label start = branchTargetLabels.get(trap.getBeginUnit());
Label end = branchTargetLabels.get(trap.getEndUnit());
Label handler = branchTargetLabels.get(trap.getHandlerUnit());
String type = slashify(trap.getException().getName());
mv.visitTryCatchBlock(start, end, handler, type);
}
}
/*
* Handle local variable slots for the "this"-local and the parameters
*/
int localCount = 0;
int[] paramSlots = new int[method.getParameterCount()];
Set assignedLocals = new HashSet();
/*
* For non-static methods the first parameters and zero-slot is the "this"-local
*/
if (!method.isStatic()) {
++localCount;
}
for (int i = 0; i < method.getParameterCount(); ++i) {
paramSlots[i] = localCount;
localCount += sizeOfType(method.getParameterType(i));
}
for (Unit u : instructions) {
if (u instanceof IdentityInst && ((IdentityInst) u).getLeftOp() instanceof Local) {
Local l = (Local) ((IdentityInst) u).getLeftOp();
IdentityRef identity = (IdentityRef) ((IdentityInst) u).getRightOp();
int slot = 0;
if (identity instanceof ThisRef) {
if (method.isStatic()) {
throw new RuntimeException("Attempting to use 'this' in static method");
}
} else if (identity instanceof ParameterRef) {
slot = paramSlots[((ParameterRef) identity).getIndex()];
} else {
// Exception ref. Skip over this
continue;
}
localToSlot.put(l, slot);
assignedLocals.add(l);
}
}
for (Local local : body.getLocals()) {
if (assignedLocals.add(local)) {
localToSlot.put(local, localCount);
localCount += sizeOfType(local.getType());
}
}
// Generate the code
for (Unit u : instructions) {
if (branchTargetLabels.containsKey(u)) {
mv.visitLabel(branchTargetLabels.get(u));
}
generateTagsForUnit(mv, u);
generateInstruction(mv, (Inst) u);
}
// Generate the local annotations
if (Options.v().write_local_annotations()) {
Label endLabel = new Label();
mv.visitLabel(endLabel);
for (Local local : body.getLocals()) {
Integer slot = localToSlot.get(local);
if (slot != null) {
BafLocal l = (BafLocal) local;
if (l.getOriginalLocal() != null) {
Local jimpleLocal = l.getOriginalLocal();
if (jimpleLocal != null) {
mv.visitLocalVariable(jimpleLocal.getName(), toTypeDesc(jimpleLocal.getType()), null, startLabel, endLabel,
slot);
}
}
}
}
}
}
/**
* Writes out the information stored in tags associated with the given unit
*
* @param mv
* The method visitor for writing out the bytecode
* @param u
* The unit for which to write out the tags
*/
protected void generateTagsForUnit(MethodVisitor mv, Unit u) {
if (u.hasTag("LineNumberTag")) {
LineNumberTag lnt = (LineNumberTag) u.getTag("LineNumberTag");
Label l;
if (branchTargetLabels.containsKey(u)) {
l = branchTargetLabels.get(u);
} else {
l = new Label();
mv.visitLabel(l);
}
mv.visitLineNumber(lnt.getLineNumber(), l);
}
}
/**
* Emits the bytecode for a single Baf instruction
*
* @param mv
* The ASM MethodVisitor the bytecode is to be emitted to
* @param inst
* The Baf instruction to be converted into bytecode
*/
protected void generateInstruction(final MethodVisitor mv, Inst inst) {
inst.apply(new InstSwitch() {
@Override
public void caseReturnVoidInst(ReturnVoidInst i) {
mv.visitInsn(Opcodes.RETURN);
}
@Override
public void caseReturnInst(ReturnInst i) {
i.getOpType().apply(new TypeSwitch() {
@Override
public void caseArrayType(ArrayType t) {
mv.visitInsn(Opcodes.ARETURN);
}
@Override
public void caseBooleanType(BooleanType t) {
mv.visitInsn(Opcodes.IRETURN);
}
@Override
public void caseByteType(ByteType t) {
mv.visitInsn(Opcodes.IRETURN);
}
@Override
public void caseCharType(CharType t) {
mv.visitInsn(Opcodes.IRETURN);
}
@Override
public void caseDoubleType(DoubleType t) {
mv.visitInsn(Opcodes.DRETURN);
}
@Override
public void caseFloatType(FloatType t) {
mv.visitInsn(Opcodes.FRETURN);
}
@Override
public void caseIntType(IntType t) {
mv.visitInsn(Opcodes.IRETURN);
}
@Override
public void caseLongType(LongType t) {
mv.visitInsn(Opcodes.LRETURN);
}
@Override
public void caseRefType(RefType t) {
mv.visitInsn(Opcodes.ARETURN);
}
@Override
public void caseShortType(ShortType t) {
mv.visitInsn(Opcodes.IRETURN);
}
@Override
public void caseNullType(NullType t) {
mv.visitInsn(Opcodes.ARETURN);
}
@Override
public void defaultCase(Type t) {
throw new RuntimeException("Invalid return type " + t.toString());
}
});
}
@Override
public void caseNopInst(NopInst i) {
mv.visitInsn(Opcodes.NOP);
}
@Override
public void caseJSRInst(JSRInst i) {
mv.visitJumpInsn(Opcodes.JSR, getBranchTargetLabel(i.getTarget()));
}
@Override
public void casePushInst(PushInst i) {
Constant c = i.getConstant();
if (c instanceof IntConstant) {
int v = ((IntConstant) c).value;
switch (v) {
case -1:
mv.visitInsn(Opcodes.ICONST_M1);
break;
case 0:
mv.visitInsn(Opcodes.ICONST_0);
break;
case 1:
mv.visitInsn(Opcodes.ICONST_1);
break;
case 2:
mv.visitInsn(Opcodes.ICONST_2);
break;
case 3:
mv.visitInsn(Opcodes.ICONST_3);
break;
case 4:
mv.visitInsn(Opcodes.ICONST_4);
break;
case 5:
mv.visitInsn(Opcodes.ICONST_5);
break;
default:
if (v >= Byte.MIN_VALUE && v <= Byte.MAX_VALUE) {
mv.visitIntInsn(Opcodes.BIPUSH, v);
} else if (v >= Short.MIN_VALUE && v <= Short.MAX_VALUE) {
mv.visitIntInsn(Opcodes.SIPUSH, v);
} else {
mv.visitLdcInsn(v);
}
}
} else if (c instanceof StringConstant) {
mv.visitLdcInsn(((StringConstant) c).value);
} else if (c instanceof ClassConstant) {
mv.visitLdcInsn(org.objectweb.asm.Type.getType(((ClassConstant) c).getValue()));
} else if (c instanceof DoubleConstant) {
double v = ((DoubleConstant) c).value;
/*
* Do not emit a DCONST_0 for negative zero, therefore we need the following check.
*/
if (new Double(v).equals(0.0)) {
mv.visitInsn(Opcodes.DCONST_0);
} else if (v == 1) {
mv.visitInsn(Opcodes.DCONST_1);
} else {
mv.visitLdcInsn(v);
}
} else if (c instanceof FloatConstant) {
float v = ((FloatConstant) c).value;
/*
* Do not emit a FCONST_0 for negative zero, therefore we need the following check.
*/
if (new Float(v).equals(0.0f)) {
mv.visitInsn(Opcodes.FCONST_0);
} else if (v == 1) {
mv.visitInsn(Opcodes.FCONST_1);
} else if (v == 2) {
mv.visitInsn(Opcodes.FCONST_2);
} else {
mv.visitLdcInsn(v);
}
} else if (c instanceof LongConstant) {
long v = ((LongConstant) c).value;
if (v == 0) {
mv.visitInsn(Opcodes.LCONST_0);
} else if (v == 1) {
mv.visitInsn(Opcodes.LCONST_1);
} else {
mv.visitLdcInsn(v);
}
} else if (c instanceof NullConstant) {
mv.visitInsn(Opcodes.ACONST_NULL);
} else if (c instanceof MethodHandle) {
Handle handle;
if (((MethodHandle) c).isMethodRef()) {
SootMethodRef methodRef = ((MethodHandle) c).getMethodRef();
handle = new Handle(((MethodHandle) c).getKind(), slashify(methodRef.declaringClass().getName()),
methodRef.name(), toTypeDesc(methodRef), methodRef.declaringClass().isInterface());
} else {
SootFieldRef fieldRef = ((MethodHandle) c).getFieldRef();
handle = new Handle(((MethodHandle) c).getKind(), slashify(fieldRef.declaringClass().getName()), fieldRef.name(),
toTypeDesc(fieldRef.type()), fieldRef.declaringClass().isInterface());
}
mv.visitLdcInsn(handle);
} else {
throw new RuntimeException("unsupported opcode");
}
}
@Override
public void casePopInst(PopInst i) {
if (i.getWordCount() == 2) {
mv.visitInsn(Opcodes.POP2);
} else {
mv.visitInsn(Opcodes.POP);
}
}
@Override
public void caseIdentityInst(IdentityInst i) {
Value l = i.getLeftOp();
Value r = i.getRightOp();
if (r instanceof CaughtExceptionRef && l instanceof Local) {
mv.visitVarInsn(Opcodes.ASTORE, localToSlot.get(l));
// asm handles constant opcodes automatically here
}
}
@Override
public void caseStoreInst(StoreInst i) {
final int slot = localToSlot.get(i.getLocal());
i.getOpType().apply(new TypeSwitch() {
@Override
public void caseArrayType(ArrayType t) {
mv.visitVarInsn(Opcodes.ASTORE, slot);
}
@Override
public void caseBooleanType(BooleanType t) {
mv.visitVarInsn(Opcodes.ISTORE, slot);
}
@Override
public void caseByteType(ByteType t) {
mv.visitVarInsn(Opcodes.ISTORE, slot);
}
@Override
public void caseCharType(CharType t) {
mv.visitVarInsn(Opcodes.ISTORE, slot);
}
@Override
public void caseDoubleType(DoubleType t) {
mv.visitVarInsn(Opcodes.DSTORE, slot);
}
@Override
public void caseFloatType(FloatType t) {
mv.visitVarInsn(Opcodes.FSTORE, slot);
}
@Override
public void caseIntType(IntType t) {
mv.visitVarInsn(Opcodes.ISTORE, slot);
}
@Override
public void caseLongType(LongType t) {
mv.visitVarInsn(Opcodes.LSTORE, slot);
}
@Override
public void caseRefType(RefType t) {
mv.visitVarInsn(Opcodes.ASTORE, slot);
}
@Override
public void caseShortType(ShortType t) {
mv.visitVarInsn(Opcodes.ISTORE, slot);
}
@Override
public void caseStmtAddressType(StmtAddressType t) {
throw new RuntimeException("JSR not supported, use recent Java compiler!");
}
@Override
public void caseNullType(NullType t) {
mv.visitVarInsn(Opcodes.ASTORE, slot);
}
@Override
public void defaultCase(Type t) {
throw new RuntimeException("Invalid local type: " + t);
}
});
}
@Override
public void caseGotoInst(GotoInst i) {
mv.visitJumpInsn(Opcodes.GOTO, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseLoadInst(LoadInst i) {
final int slot = localToSlot.get(i.getLocal());
i.getOpType().apply(new TypeSwitch() {
@Override
public void caseArrayType(ArrayType t) {
mv.visitVarInsn(Opcodes.ALOAD, slot);
}
@Override
public void caseBooleanType(BooleanType t) {
mv.visitVarInsn(Opcodes.ILOAD, slot);
}
@Override
public void caseByteType(ByteType t) {
mv.visitVarInsn(Opcodes.ILOAD, slot);
}
@Override
public void caseCharType(CharType t) {
mv.visitVarInsn(Opcodes.ILOAD, slot);
}
@Override
public void caseDoubleType(DoubleType t) {
mv.visitVarInsn(Opcodes.DLOAD, slot);
}
@Override
public void caseFloatType(FloatType t) {
mv.visitVarInsn(Opcodes.FLOAD, slot);
}
@Override
public void caseIntType(IntType t) {
mv.visitVarInsn(Opcodes.ILOAD, slot);
}
@Override
public void caseLongType(LongType t) {
mv.visitVarInsn(Opcodes.LLOAD, slot);
}
@Override
public void caseRefType(RefType t) {
mv.visitVarInsn(Opcodes.ALOAD, slot);
}
@Override
public void caseShortType(ShortType t) {
mv.visitVarInsn(Opcodes.ILOAD, slot);
}
@Override
public void caseNullType(NullType t) {
mv.visitVarInsn(Opcodes.ALOAD, slot);
}
@Override
public void defaultCase(Type t) {
throw new RuntimeException("Invalid local type: " + t);
}
});
}
@Override
public void caseArrayWriteInst(ArrayWriteInst i) {
i.getOpType().apply(new TypeSwitch() {
@Override
public void caseArrayType(ArrayType t) {
mv.visitInsn(Opcodes.AASTORE);
}
@Override
public void caseBooleanType(BooleanType t) {
mv.visitInsn(Opcodes.BASTORE);
}
@Override
public void caseByteType(ByteType t) {
mv.visitInsn(Opcodes.BASTORE);
}
@Override
public void caseCharType(CharType t) {
mv.visitInsn(Opcodes.CASTORE);
}
@Override
public void caseDoubleType(DoubleType t) {
mv.visitInsn(Opcodes.DASTORE);
}
@Override
public void caseFloatType(FloatType t) {
mv.visitInsn(Opcodes.FASTORE);
}
@Override
public void caseIntType(IntType t) {
mv.visitInsn(Opcodes.IASTORE);
}
@Override
public void caseLongType(LongType t) {
mv.visitInsn(Opcodes.LASTORE);
}
@Override
public void caseRefType(RefType t) {
mv.visitInsn(Opcodes.AASTORE);
}
@Override
public void caseShortType(ShortType t) {
mv.visitInsn(Opcodes.SASTORE);
}
@Override
public void defaultCase(Type t) {
throw new RuntimeException("Invalid type: " + t);
}
});
}
@Override
public void caseArrayReadInst(ArrayReadInst i) {
i.getOpType().apply(new TypeSwitch() {
@Override
public void caseArrayType(ArrayType t) {
mv.visitInsn(Opcodes.AALOAD);
}
@Override
public void caseBooleanType(BooleanType t) {
mv.visitInsn(Opcodes.BALOAD);
}
@Override
public void caseByteType(ByteType t) {
mv.visitInsn(Opcodes.BALOAD);
}
@Override
public void caseCharType(CharType t) {
mv.visitInsn(Opcodes.CALOAD);
}
@Override
public void caseDoubleType(DoubleType t) {
mv.visitInsn(Opcodes.DALOAD);
}
@Override
public void caseFloatType(FloatType t) {
mv.visitInsn(Opcodes.FALOAD);
}
@Override
public void caseIntType(IntType t) {
mv.visitInsn(Opcodes.IALOAD);
}
@Override
public void caseLongType(LongType t) {
mv.visitInsn(Opcodes.LALOAD);
}
@Override
public void caseRefType(RefType t) {
mv.visitInsn(Opcodes.AALOAD);
}
@Override
public void caseShortType(ShortType t) {
mv.visitInsn(Opcodes.SALOAD);
}
@Override
public void caseNullType(NullType t) {
mv.visitInsn(Opcodes.AALOAD);
}
@Override
public void defaultCase(Type t) {
throw new RuntimeException("Invalid type: " + t);
}
});
}
@Override
public void caseIfNullInst(IfNullInst i) {
mv.visitJumpInsn(Opcodes.IFNULL, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseIfNonNullInst(IfNonNullInst i) {
mv.visitJumpInsn(Opcodes.IFNONNULL, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseIfEqInst(IfEqInst i) {
mv.visitJumpInsn(Opcodes.IFEQ, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseIfNeInst(IfNeInst i) {
mv.visitJumpInsn(Opcodes.IFNE, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseIfGtInst(IfGtInst i) {
mv.visitJumpInsn(Opcodes.IFGT, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseIfGeInst(IfGeInst i) {
mv.visitJumpInsn(Opcodes.IFGE, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseIfLtInst(IfLtInst i) {
mv.visitJumpInsn(Opcodes.IFLT, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseIfLeInst(IfLeInst i) {
mv.visitJumpInsn(Opcodes.IFLE, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseIfCmpEqInst(final IfCmpEqInst i) {
i.getOpType().apply(new TypeSwitch() {
@Override
public void caseArrayType(ArrayType t) {
mv.visitJumpInsn(Opcodes.IF_ACMPEQ, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseBooleanType(BooleanType t) {
mv.visitJumpInsn(Opcodes.IF_ICMPEQ, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseByteType(ByteType t) {
mv.visitJumpInsn(Opcodes.IF_ICMPEQ, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseCharType(CharType t) {
mv.visitJumpInsn(Opcodes.IF_ICMPEQ, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseDoubleType(DoubleType t) {
mv.visitInsn(Opcodes.DCMPG);
mv.visitJumpInsn(Opcodes.IFEQ, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseFloatType(FloatType t) {
mv.visitInsn(Opcodes.FCMPG);
mv.visitJumpInsn(Opcodes.IFEQ, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseIntType(IntType t) {
mv.visitJumpInsn(Opcodes.IF_ICMPEQ, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseLongType(LongType t) {
mv.visitInsn(Opcodes.LCMP);
mv.visitJumpInsn(Opcodes.IFEQ, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseRefType(RefType t) {
mv.visitJumpInsn(Opcodes.IF_ACMPEQ, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseShortType(ShortType t) {
mv.visitJumpInsn(Opcodes.IF_ICMPEQ, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseNullType(NullType t) {
mv.visitJumpInsn(Opcodes.IF_ACMPEQ, getBranchTargetLabel(i.getTarget()));
}
@Override
public void defaultCase(Type t) {
throw new RuntimeException("invalid type");
}
});
}
@Override
public void caseIfCmpNeInst(final IfCmpNeInst i) {
i.getOpType().apply(new TypeSwitch() {
@Override
public void caseArrayType(ArrayType t) {
mv.visitJumpInsn(Opcodes.IF_ACMPNE, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseBooleanType(BooleanType t) {
mv.visitJumpInsn(Opcodes.IF_ICMPNE, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseByteType(ByteType t) {
mv.visitJumpInsn(Opcodes.IF_ICMPNE, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseCharType(CharType t) {
mv.visitJumpInsn(Opcodes.IF_ICMPNE, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseDoubleType(DoubleType t) {
mv.visitInsn(Opcodes.DCMPG);
mv.visitJumpInsn(Opcodes.IFNE, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseFloatType(FloatType t) {
mv.visitInsn(Opcodes.FCMPG);
mv.visitJumpInsn(Opcodes.IFNE, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseIntType(IntType t) {
mv.visitJumpInsn(Opcodes.IF_ICMPNE, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseLongType(LongType t) {
mv.visitInsn(Opcodes.LCMP);
mv.visitJumpInsn(Opcodes.IFNE, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseRefType(RefType t) {
mv.visitJumpInsn(Opcodes.IF_ACMPNE, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseShortType(ShortType t) {
mv.visitJumpInsn(Opcodes.IF_ICMPNE, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseNullType(NullType t) {
mv.visitJumpInsn(Opcodes.IF_ACMPNE, getBranchTargetLabel(i.getTarget()));
}
@Override
public void defaultCase(Type t) {
throw new RuntimeException("invalid type");
}
});
}
@Override
public void caseIfCmpGtInst(final IfCmpGtInst i) {
i.getOpType().apply(new TypeSwitch() {
@Override
public void caseBooleanType(BooleanType t) {
mv.visitJumpInsn(Opcodes.IF_ICMPGT, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseByteType(ByteType t) {
mv.visitJumpInsn(Opcodes.IF_ICMPGT, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseCharType(CharType t) {
mv.visitJumpInsn(Opcodes.IF_ICMPGT, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseDoubleType(DoubleType t) {
mv.visitInsn(Opcodes.DCMPG);
mv.visitJumpInsn(Opcodes.IFGT, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseFloatType(FloatType t) {
mv.visitInsn(Opcodes.FCMPG);
mv.visitJumpInsn(Opcodes.IFGT, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseIntType(IntType t) {
mv.visitJumpInsn(Opcodes.IF_ICMPGT, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseLongType(LongType t) {
mv.visitInsn(Opcodes.LCMP);
mv.visitJumpInsn(Opcodes.IFGT, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseShortType(ShortType t) {
mv.visitJumpInsn(Opcodes.IF_ICMPGT, getBranchTargetLabel(i.getTarget()));
}
@Override
public void defaultCase(Type t) {
throw new RuntimeException("invalid type");
}
});
}
@Override
public void caseIfCmpGeInst(final IfCmpGeInst i) {
i.getOpType().apply(new TypeSwitch() {
@Override
public void caseBooleanType(BooleanType t) {
mv.visitJumpInsn(Opcodes.IF_ICMPGE, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseByteType(ByteType t) {
mv.visitJumpInsn(Opcodes.IF_ICMPGE, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseCharType(CharType t) {
mv.visitJumpInsn(Opcodes.IF_ICMPGE, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseDoubleType(DoubleType t) {
mv.visitInsn(Opcodes.DCMPG);
mv.visitJumpInsn(Opcodes.IFGE, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseFloatType(FloatType t) {
mv.visitInsn(Opcodes.FCMPG);
mv.visitJumpInsn(Opcodes.IFGE, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseIntType(IntType t) {
mv.visitJumpInsn(Opcodes.IF_ICMPGE, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseLongType(LongType t) {
mv.visitInsn(Opcodes.LCMP);
mv.visitJumpInsn(Opcodes.IFGE, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseShortType(ShortType t) {
mv.visitJumpInsn(Opcodes.IF_ICMPGE, getBranchTargetLabel(i.getTarget()));
}
@Override
public void defaultCase(Type t) {
throw new RuntimeException("invalid type");
}
});
}
@Override
public void caseIfCmpLtInst(final IfCmpLtInst i) {
i.getOpType().apply(new TypeSwitch() {
@Override
public void caseBooleanType(BooleanType t) {
mv.visitJumpInsn(Opcodes.IF_ICMPLT, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseByteType(ByteType t) {
mv.visitJumpInsn(Opcodes.IF_ICMPLT, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseCharType(CharType t) {
mv.visitJumpInsn(Opcodes.IF_ICMPLT, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseDoubleType(DoubleType t) {
mv.visitInsn(Opcodes.DCMPG);
mv.visitJumpInsn(Opcodes.IFLT, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseFloatType(FloatType t) {
mv.visitInsn(Opcodes.FCMPG);
mv.visitJumpInsn(Opcodes.IFLT, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseIntType(IntType t) {
mv.visitJumpInsn(Opcodes.IF_ICMPLT, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseLongType(LongType t) {
mv.visitInsn(Opcodes.LCMP);
mv.visitJumpInsn(Opcodes.IFLT, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseShortType(ShortType t) {
mv.visitJumpInsn(Opcodes.IF_ICMPLT, getBranchTargetLabel(i.getTarget()));
}
@Override
public void defaultCase(Type t) {
throw new RuntimeException("invalid type");
}
});
}
@Override
public void caseIfCmpLeInst(final IfCmpLeInst i) {
i.getOpType().apply(new TypeSwitch() {
@Override
public void caseBooleanType(BooleanType t) {
mv.visitJumpInsn(Opcodes.IF_ICMPLE, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseByteType(ByteType t) {
mv.visitJumpInsn(Opcodes.IF_ICMPLE, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseCharType(CharType t) {
mv.visitJumpInsn(Opcodes.IF_ICMPLE, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseDoubleType(DoubleType t) {
mv.visitInsn(Opcodes.DCMPG);
mv.visitJumpInsn(Opcodes.IFLE, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseFloatType(FloatType t) {
mv.visitInsn(Opcodes.FCMPG);
mv.visitJumpInsn(Opcodes.IFLE, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseIntType(IntType t) {
mv.visitJumpInsn(Opcodes.IF_ICMPLE, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseLongType(LongType t) {
mv.visitInsn(Opcodes.LCMP);
mv.visitJumpInsn(Opcodes.IFLE, getBranchTargetLabel(i.getTarget()));
}
@Override
public void caseShortType(ShortType t) {
mv.visitJumpInsn(Opcodes.IF_ICMPLE, getBranchTargetLabel(i.getTarget()));
}
@Override
public void defaultCase(Type t) {
throw new RuntimeException("invalid type");
}
});
}
@Override
public void caseStaticGetInst(StaticGetInst i) {
SootFieldRef field = i.getFieldRef();
mv.visitFieldInsn(Opcodes.GETSTATIC, slashify(field.declaringClass().getName()), field.name(),
toTypeDesc(field.type()));
}
@Override
public void caseStaticPutInst(StaticPutInst i) {
SootFieldRef field = i.getFieldRef();
mv.visitFieldInsn(Opcodes.PUTSTATIC, slashify(field.declaringClass().getName()), field.name(),
toTypeDesc(field.type()));
}
@Override
public void caseFieldGetInst(FieldGetInst i) {
SootFieldRef field = i.getFieldRef();
mv.visitFieldInsn(Opcodes.GETFIELD, slashify(field.declaringClass().getName()), field.name(),
toTypeDesc(field.type()));
}
@Override
public void caseFieldPutInst(FieldPutInst i) {
SootFieldRef field = i.getFieldRef();
mv.visitFieldInsn(Opcodes.PUTFIELD, slashify(field.declaringClass().getName()), field.name(),
toTypeDesc(field.type()));
}
@Override
public void caseInstanceCastInst(InstanceCastInst i) {
Type castType = i.getCastType();
if (castType instanceof RefType) {
mv.visitTypeInsn(Opcodes.CHECKCAST, slashify(((RefType) castType).getClassName()));
} else if (castType instanceof ArrayType) {
mv.visitTypeInsn(Opcodes.CHECKCAST, toTypeDesc(castType));
}
}
@Override
public void caseInstanceOfInst(InstanceOfInst i) {
Type checkType = i.getCheckType();
if (checkType instanceof RefType) {
mv.visitTypeInsn(Opcodes.INSTANCEOF, slashify(((RefType) checkType).getClassName()));
} else if (checkType instanceof ArrayType) {
mv.visitTypeInsn(Opcodes.INSTANCEOF, toTypeDesc(checkType));
}
}
@Override
public void casePrimitiveCastInst(PrimitiveCastInst i) {
Type from = i.getFromType();
final Type to = i.getToType();
from.apply(new TypeSwitch() {
@Override
public void caseBooleanType(BooleanType t) {
emitIntToTypeCast();
}
@Override
public void caseByteType(ByteType t) {
emitIntToTypeCast();
}
@Override
public void caseCharType(CharType t) {
emitIntToTypeCast();
}
@Override
public void caseDoubleType(DoubleType t) {
if (to.equals(IntType.v())) {
mv.visitInsn(Opcodes.D2I);
} else if (to.equals(LongType.v())) {
mv.visitInsn(Opcodes.D2L);
} else if (to.equals(FloatType.v())) {
mv.visitInsn(Opcodes.D2F);
} else {
throw new RuntimeException("invalid to-type from double");
}
}
@Override
public void caseFloatType(FloatType t) {
if (to.equals(IntType.v())) {
mv.visitInsn(Opcodes.F2I);
} else if (to.equals(LongType.v())) {
mv.visitInsn(Opcodes.F2L);
} else if (to.equals(DoubleType.v())) {
mv.visitInsn(Opcodes.F2D);
} else {
throw new RuntimeException("invalid to-type from float");
}
}
@Override
public void caseIntType(IntType t) {
emitIntToTypeCast();
}
@Override
public void caseLongType(LongType t) {
if (to.equals(IntType.v())) {
mv.visitInsn(Opcodes.L2I);
} else if (to.equals(FloatType.v())) {
mv.visitInsn(Opcodes.L2F);
} else if (to.equals(DoubleType.v())) {
mv.visitInsn(Opcodes.L2D);
} else {
throw new RuntimeException("invalid to-type from long");
}
}
@Override
public void caseShortType(ShortType t) {
emitIntToTypeCast();
}
@Override
public void defaultCase(Type t) {
throw new RuntimeException("invalid from-type: " + t);
}
private void emitIntToTypeCast() {
if (to.equals(ByteType.v())) {
mv.visitInsn(Opcodes.I2B);
} else if (to.equals(CharType.v())) {
mv.visitInsn(Opcodes.I2C);
} else if (to.equals(ShortType.v())) {
mv.visitInsn(Opcodes.I2S);
} else if (to.equals(FloatType.v())) {
mv.visitInsn(Opcodes.I2F);
} else if (to.equals(LongType.v())) {
mv.visitInsn(Opcodes.I2L);
} else if (to.equals(DoubleType.v())) {
mv.visitInsn(Opcodes.I2D);
} else if (to.equals(IntType.v())) {
} else if (to.equals(BooleanType.v())) {
} else {
throw new RuntimeException("invalid to-type from int");
}
}
});
}
@Override
public void caseDynamicInvokeInst(DynamicInvokeInst i) {
SootMethodRef m = i.getMethodRef();
SootMethodRef bsm = i.getBootstrapMethodRef();
List args = i.getBootstrapArgs();
final Object[] argsArray = new Object[args.size()];
int index = 0;
for (Value v : args) {
final int j = index;
v.apply(new ConstantSwitch() {
@Override
public void defaultCase(Object object) {
throw new RuntimeException("Unexpected constant type!");
}
@Override
public void caseStringConstant(StringConstant v) {
argsArray[j] = v.value;
}
@Override
public void caseNullConstant(NullConstant v) {
/*
* The Jasmin-backend throws an exception for the null-type.
*/
throw new RuntimeException("Unexpected NullType as argument-type in invokedynamic!");
}
@Override
public void caseMethodHandle(MethodHandle handle) {
if (handle.isMethodRef()) {
SootMethodRef methodRef = handle.getMethodRef();
argsArray[j] = new Handle(handle.getKind(), slashify(methodRef.declaringClass().getName()), methodRef.name(),
toTypeDesc(methodRef), methodRef.declaringClass().isInterface());
} else {
SootFieldRef fieldRef = handle.getFieldRef();
argsArray[j] = new Handle(handle.getKind(), slashify(fieldRef.declaringClass().getName()), fieldRef.name(),
toTypeDesc(fieldRef.type()), fieldRef.declaringClass().isInterface());
}
}
@Override
public void caseMethodType(MethodType type) {
argsArray[j] = org.objectweb.asm.Type.getType(toTypeDesc(type.getParameterTypes(), type.getReturnType()));
}
@Override
public void caseLongConstant(LongConstant v) {
argsArray[j] = v.value;
}
@Override
public void caseIntConstant(IntConstant v) {
argsArray[j] = v.value;
}
@Override
public void caseFloatConstant(FloatConstant v) {
argsArray[j] = v.value;
}
@Override
public void caseDoubleConstant(DoubleConstant v) {
argsArray[j] = v.value;
}
@Override
public void caseClassConstant(ClassConstant v) {
argsArray[j] = org.objectweb.asm.Type.getType(v.getValue());
}
});
++index;
}
mv.visitInvokeDynamicInsn(m.name(), toTypeDesc(m), new Handle(i.getHandleTag(),
slashify(bsm.declaringClass().getName()), bsm.name(), toTypeDesc(bsm), bsm.declaringClass().isInterface()),
argsArray);
}
@Override
public void caseStaticInvokeInst(StaticInvokeInst i) {
SootMethodRef m = i.getMethodRef();
mv.visitMethodInsn(Opcodes.INVOKESTATIC, slashify(m.declaringClass().getName()), m.name(), toTypeDesc(m),
m.declaringClass().isInterface() && !m.isStatic());
}
@Override
public void caseVirtualInvokeInst(VirtualInvokeInst i) {
SootMethodRef m = i.getMethodRef();
mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, slashify(m.declaringClass().getName()), m.name(), toTypeDesc(m),
m.declaringClass().isInterface());
}
@Override
public void caseInterfaceInvokeInst(InterfaceInvokeInst i) {
SootMethodRef m = i.getMethodRef();
SootClass declaration = m.declaringClass();
boolean isInterface = true;
if (!declaration.isPhantom() && !declaration.isInterface()) {
/*
* If the declaring class of a method called via invokeinterface is a phantom class we assume the declaring class
* to be an interface. This might not be true in general, but as of today Soot can not evaluate isInterface() for
* phantom classes correctly.
*/
isInterface = false;
}
mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, slashify(declaration.getName()), m.name(), toTypeDesc(m), isInterface);
}
@Override
public void caseSpecialInvokeInst(SpecialInvokeInst i) {
SootMethodRef m = i.getMethodRef();
mv.visitMethodInsn(Opcodes.INVOKESPECIAL, slashify(m.declaringClass().getName()), m.name(), toTypeDesc(m),
m.declaringClass().isInterface());
}
@Override
public void caseThrowInst(ThrowInst i) {
mv.visitInsn(Opcodes.ATHROW);
}
@Override
public void caseAddInst(AddInst i) {
i.getOpType().apply(new TypeSwitch() {
@Override
public void caseBooleanType(BooleanType t) {
mv.visitInsn(Opcodes.IADD);
}
@Override
public void caseByteType(ByteType t) {
mv.visitInsn(Opcodes.IADD);
}
@Override
public void caseCharType(CharType t) {
mv.visitInsn(Opcodes.IADD);
}
@Override
public void caseDoubleType(DoubleType t) {
mv.visitInsn(Opcodes.DADD);
}
@Override
public void caseFloatType(FloatType t) {
mv.visitInsn(Opcodes.FADD);
}
@Override
public void caseIntType(IntType t) {
mv.visitInsn(Opcodes.IADD);
}
@Override
public void caseLongType(LongType t) {
mv.visitInsn(Opcodes.LADD);
}
@Override
public void caseShortType(ShortType t) {
mv.visitInsn(Opcodes.IADD);
}
@Override
public void defaultCase(Type t) {
throw new RuntimeException("invalid type");
}
});
}
@Override
public void caseAndInst(AndInst i) {
if (i.getOpType().equals(LongType.v())) {
mv.visitInsn(Opcodes.LAND);
} else {
mv.visitInsn(Opcodes.IAND);
}
}
@Override
public void caseOrInst(OrInst i) {
if (i.getOpType().equals(LongType.v())) {
mv.visitInsn(Opcodes.LOR);
} else {
mv.visitInsn(Opcodes.IOR);
}
}
@Override
public void caseXorInst(XorInst i) {
if (i.getOpType().equals(LongType.v())) {
mv.visitInsn(Opcodes.LXOR);
} else {
mv.visitInsn(Opcodes.IXOR);
}
}
@Override
public void caseArrayLengthInst(ArrayLengthInst i) {
mv.visitInsn(Opcodes.ARRAYLENGTH);
}
@Override
public void caseCmpInst(CmpInst i) {
mv.visitInsn(Opcodes.LCMP);
}
@Override
public void caseCmpgInst(CmpgInst i) {
if (i.getOpType().equals(FloatType.v())) {
mv.visitInsn(Opcodes.FCMPG);
} else {
mv.visitInsn(Opcodes.DCMPG);
}
}
@Override
public void caseCmplInst(CmplInst i) {
if (i.getOpType().equals(FloatType.v())) {
mv.visitInsn(Opcodes.FCMPL);
} else {
mv.visitInsn(Opcodes.DCMPL);
}
}
@Override
public void caseDivInst(DivInst i) {
i.getOpType().apply(new TypeSwitch() {
@Override
public void caseBooleanType(BooleanType t) {
mv.visitInsn(Opcodes.IDIV);
}
@Override
public void caseByteType(ByteType t) {
mv.visitInsn(Opcodes.IDIV);
}
@Override
public void caseCharType(CharType t) {
mv.visitInsn(Opcodes.IDIV);
}
@Override
public void caseDoubleType(DoubleType t) {
mv.visitInsn(Opcodes.DDIV);
}
@Override
public void caseFloatType(FloatType t) {
mv.visitInsn(Opcodes.FDIV);
}
@Override
public void caseIntType(IntType t) {
mv.visitInsn(Opcodes.IDIV);
}
@Override
public void caseLongType(LongType t) {
mv.visitInsn(Opcodes.LDIV);
}
@Override
public void caseShortType(ShortType t) {
mv.visitInsn(Opcodes.IDIV);
}
@Override
public void defaultCase(Type t) {
throw new RuntimeException("invalid type");
}
});
}
@Override
public void caseIncInst(IncInst i) {
if (i.getUseBoxes().get(0).getValue() != i.getDefBoxes().get(0).getValue()) {
throw new RuntimeException("iinc def and use boxes don't match");
}
if (i.getConstant() instanceof IntConstant) {
mv.visitIincInsn(localToSlot.get(i.getLocal()), ((IntConstant) i.getConstant()).value);
} else {
throw new RuntimeException("Wrong constant type for increment!");
}
}
@Override
public void caseMulInst(MulInst i) {
i.getOpType().apply(new TypeSwitch() {
@Override
public void caseBooleanType(BooleanType t) {
mv.visitInsn(Opcodes.IMUL);
}
@Override
public void caseByteType(ByteType t) {
mv.visitInsn(Opcodes.IMUL);
}
@Override
public void caseCharType(CharType t) {
mv.visitInsn(Opcodes.IMUL);
}
@Override
public void caseDoubleType(DoubleType t) {
mv.visitInsn(Opcodes.DMUL);
}
@Override
public void caseFloatType(FloatType t) {
mv.visitInsn(Opcodes.FMUL);
}
@Override
public void caseIntType(IntType t) {
mv.visitInsn(Opcodes.IMUL);
}
@Override
public void caseLongType(LongType t) {
mv.visitInsn(Opcodes.LMUL);
}
@Override
public void caseShortType(ShortType t) {
mv.visitInsn(Opcodes.IMUL);
}
@Override
public void defaultCase(Type t) {
throw new RuntimeException("invalid type");
}
});
}
@Override
public void caseRemInst(RemInst i) {
i.getOpType().apply(new TypeSwitch() {
@Override
public void caseBooleanType(BooleanType t) {
mv.visitInsn(Opcodes.IREM);
}
@Override
public void caseByteType(ByteType t) {
mv.visitInsn(Opcodes.IREM);
}
@Override
public void caseCharType(CharType t) {
mv.visitInsn(Opcodes.IREM);
}
@Override
public void caseDoubleType(DoubleType t) {
mv.visitInsn(Opcodes.DREM);
}
@Override
public void caseFloatType(FloatType t) {
mv.visitInsn(Opcodes.FREM);
}
@Override
public void caseIntType(IntType t) {
mv.visitInsn(Opcodes.IREM);
}
@Override
public void caseLongType(LongType t) {
mv.visitInsn(Opcodes.LREM);
}
@Override
public void caseShortType(ShortType t) {
mv.visitInsn(Opcodes.IREM);
}
@Override
public void defaultCase(Type t) {
throw new RuntimeException("invalid type");
}
});
}
@Override
public void caseSubInst(SubInst i) {
i.getOpType().apply(new TypeSwitch() {
@Override
public void caseBooleanType(BooleanType t) {
mv.visitInsn(Opcodes.ISUB);
}
@Override
public void caseByteType(ByteType t) {
mv.visitInsn(Opcodes.ISUB);
}
@Override
public void caseCharType(CharType t) {
mv.visitInsn(Opcodes.ISUB);
}
@Override
public void caseDoubleType(DoubleType t) {
mv.visitInsn(Opcodes.DSUB);
}
@Override
public void caseFloatType(FloatType t) {
mv.visitInsn(Opcodes.FSUB);
}
@Override
public void caseIntType(IntType t) {
mv.visitInsn(Opcodes.ISUB);
}
@Override
public void caseLongType(LongType t) {
mv.visitInsn(Opcodes.LSUB);
}
@Override
public void caseShortType(ShortType t) {
mv.visitInsn(Opcodes.ISUB);
}
@Override
public void defaultCase(Type t) {
throw new RuntimeException("invalid type");
}
});
}
@Override
public void caseShlInst(ShlInst i) {
if (i.getOpType().equals(LongType.v())) {
mv.visitInsn(Opcodes.LSHL);
} else {
mv.visitInsn(Opcodes.ISHL);
}
}
@Override
public void caseShrInst(ShrInst i) {
if (i.getOpType().equals(LongType.v())) {
mv.visitInsn(Opcodes.LSHR);
} else {
mv.visitInsn(Opcodes.ISHR);
}
}
@Override
public void caseUshrInst(UshrInst i) {
if (i.getOpType().equals(LongType.v())) {
mv.visitInsn(Opcodes.LUSHR);
} else {
mv.visitInsn(Opcodes.IUSHR);
}
}
@Override
public void caseNewInst(NewInst i) {
mv.visitTypeInsn(Opcodes.NEW, slashify(i.getBaseType().getClassName()));
}
@Override
public void caseNegInst(NegInst i) {
i.getOpType().apply(new TypeSwitch() {
@Override
public void caseBooleanType(BooleanType t) {
mv.visitInsn(Opcodes.INEG);
}
@Override
public void caseByteType(ByteType t) {
mv.visitInsn(Opcodes.INEG);
}
@Override
public void caseCharType(CharType t) {
mv.visitInsn(Opcodes.INEG);
}
@Override
public void caseDoubleType(DoubleType t) {
mv.visitInsn(Opcodes.DNEG);
}
@Override
public void caseFloatType(FloatType t) {
mv.visitInsn(Opcodes.FNEG);
}
@Override
public void caseIntType(IntType t) {
mv.visitInsn(Opcodes.INEG);
}
@Override
public void caseLongType(LongType t) {
mv.visitInsn(Opcodes.LNEG);
}
@Override
public void caseShortType(ShortType t) {
mv.visitInsn(Opcodes.INEG);
}
@Override
public void defaultCase(Type t) {
throw new RuntimeException("invalid type");
}
});
}
@Override
public void caseSwapInst(SwapInst i) {
mv.visitInsn(Opcodes.SWAP);
}
@Override
public void caseDup1Inst(Dup1Inst i) {
if (sizeOfType(i.getOp1Type()) == 2) {
mv.visitInsn(Opcodes.DUP2);
} else {
mv.visitInsn(Opcodes.DUP);
}
}
@Override
public void caseDup2Inst(Dup2Inst i) {
Type firstOpType = i.getOp1Type();
Type secondOpType = i.getOp2Type();
// The first two cases have no real bytecode equivalents.
// Use a pair of instructions to simulate them.
if (sizeOfType(firstOpType) == 2) {
mv.visitInsn(Opcodes.DUP2);
if (sizeOfType(secondOpType) == 2) {
mv.visitInsn(Opcodes.DUP2);
} else {
mv.visitInsn(Opcodes.DUP);
}
} else if (sizeOfType(secondOpType) == 2) {
mv.visitInsn(Opcodes.DUP);
mv.visitInsn(Opcodes.DUP2);
} else {
mv.visitInsn(Opcodes.DUP2);
}
}
@Override
public void caseDup1_x1Inst(Dup1_x1Inst i) {
Type opType = i.getOp1Type();
Type underType = i.getUnder1Type();
if (sizeOfType(opType) == 2) {
if (sizeOfType(underType) == 2) {
mv.visitInsn(Opcodes.DUP2_X2);
} else {
mv.visitInsn(Opcodes.DUP2_X1);
}
} else {
if (sizeOfType(underType) == 2) {
mv.visitInsn(Opcodes.DUP_X2);
} else {
mv.visitInsn(Opcodes.DUP_X1);
}
}
}
@Override
public void caseDup1_x2Inst(Dup1_x2Inst i) {
int toSkip = sizeOfType(i.getUnder1Type()) + sizeOfType(i.getUnder2Type());
if (sizeOfType(i.getOp1Type()) == 2) {
if (toSkip == 2) {
mv.visitInsn(Opcodes.DUP2_X2);
} else {
throw new RuntimeException("magic not implemented yet");
}
} else {
if (toSkip == 2) {
mv.visitInsn(Opcodes.DUP_X2);
} else {
throw new RuntimeException("magic not implemented yet");
}
}
}
@Override
public void caseDup2_x1Inst(Dup2_x1Inst i) {
int toDup = sizeOfType(i.getOp1Type()) + sizeOfType(i.getOp2Type());
if (toDup == 2) {
if (sizeOfType(i.getUnder1Type()) == 2) {
mv.visitInsn(Opcodes.DUP2_X2);
} else {
mv.visitInsn(Opcodes.DUP2_X1);
}
} else {
throw new RuntimeException("magic not implemented yet");
}
}
@Override
public void caseDup2_x2Inst(Dup2_x2Inst i) {
int toDup = sizeOfType(i.getOp1Type()) + sizeOfType(i.getOp2Type());
int toSkip = sizeOfType(i.getUnder1Type()) + sizeOfType(i.getUnder2Type());
if (toDup > 2 || toSkip > 2) {
throw new RuntimeException("magic not implemented yet");
}
if (toDup == 2 && toSkip == 2) {
mv.visitInsn(Opcodes.DUP2_X2);
} else {
throw new RuntimeException("VoidType not allowed in Dup2_x2 Instruction");
}
}
@Override
public void caseNewArrayInst(NewArrayInst i) {
Type t = i.getBaseType();
if (t instanceof RefType) {
mv.visitTypeInsn(Opcodes.ANEWARRAY, slashify(((RefType) t).getClassName()));
} else if (t instanceof ArrayType) {
mv.visitTypeInsn(Opcodes.ANEWARRAY, toTypeDesc(t));
} else {
int type;
if (t.equals(BooleanType.v())) {
type = Opcodes.T_BOOLEAN;
} else if (t.equals(CharType.v())) {
type = Opcodes.T_CHAR;
} else if (t.equals(FloatType.v())) {
type = Opcodes.T_FLOAT;
} else if (t.equals(DoubleType.v())) {
type = Opcodes.T_DOUBLE;
} else if (t.equals(ByteType.v())) {
type = Opcodes.T_BYTE;
} else if (t.equals(ShortType.v())) {
type = Opcodes.T_SHORT;
} else if (t.equals(IntType.v())) {
type = Opcodes.T_INT;
} else if (t.equals(LongType.v())) {
type = Opcodes.T_LONG;
} else {
throw new RuntimeException("invalid type");
}
mv.visitIntInsn(Opcodes.NEWARRAY, type);
}
}
@Override
public void caseNewMultiArrayInst(NewMultiArrayInst i) {
mv.visitMultiANewArrayInsn(toTypeDesc(i.getBaseType()), i.getDimensionCount());
}
@Override
public void caseLookupSwitchInst(LookupSwitchInst i) {
List values = i.getLookupValues();
List targets = i.getTargets();
int[] keys = new int[values.size()];
Label[] labels = new Label[values.size()];
for (int j = 0; j < values.size(); j++) {
keys[j] = values.get(j).value;
labels[j] = branchTargetLabels.get(targets.get(j));
}
mv.visitLookupSwitchInsn(branchTargetLabels.get(i.getDefaultTarget()), keys, labels);
}
@Override
public void caseTableSwitchInst(TableSwitchInst i) {
List targets = i.getTargets();
Label[] labels = new Label[targets.size()];
for (int j = 0; j < targets.size(); j++) {
labels[j] = branchTargetLabels.get(targets.get(j));
}
mv.visitTableSwitchInsn(i.getLowIndex(), i.getHighIndex(), branchTargetLabels.get(i.getDefaultTarget()), labels);
}
@Override
public void caseEnterMonitorInst(EnterMonitorInst i) {
mv.visitInsn(Opcodes.MONITORENTER);
}
@Override
public void caseExitMonitorInst(ExitMonitorInst i) {
mv.visitInsn(Opcodes.MONITOREXIT);
}
});
}
}