Example usage for org.objectweb.asm MethodVisitor visitInsn

List of usage examples for org.objectweb.asm MethodVisitor visitInsn

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Introduction

In this page you can find the example usage for org.objectweb.asm MethodVisitor visitInsn.

Prototype

public void visitInsn(final int opcode)

Source Link

Document

Visits a zero operand instruction.

Usage

From source file:br.usp.each.saeg.badua.core.internal.instr.LongInitProbe.java

License:Open Source License

@Override
public void accept(final MethodVisitor mv) {
    mv.visitInsn(Opcodes.LCONST_0);
    mv.visitVarInsn(Opcodes.LSTORE, vCovered);
    mv.visitInsn(Opcodes.LCONST_0);/*from   w  w  w  . j a va  2 s.co  m*/
    mv.visitVarInsn(Opcodes.LSTORE, vAlive);
    mv.visitLdcInsn(-1L);
    mv.visitVarInsn(Opcodes.LSTORE, vSleepy);
}

From source file:br.usp.each.saeg.badua.core.internal.instr.LongProbe.java

License:Open Source License

@Override
public void accept(final MethodVisitor mv) {

    // update covered
    if (potcov != 0) {
        mv.visitVarInsn(Opcodes.LLOAD, vAlive);

        if (!singlePredecessor && potcovpuse != 0) {
            mv.visitVarInsn(Opcodes.LLOAD, vSleepy);
            mv.visitInsn(Opcodes.LAND);
        }//  w w  w. ja v a2s  .c o m

        mv.visitLdcInsn(potcov);
        mv.visitInsn(Opcodes.LAND);
        mv.visitVarInsn(Opcodes.LLOAD, vCovered);
        mv.visitInsn(Opcodes.LOR);
        mv.visitVarInsn(Opcodes.LSTORE, vCovered);
    }

    // update alive
    if (disabled != 0) {
        mv.visitLdcInsn(~disabled);
        mv.visitVarInsn(Opcodes.LLOAD, vAlive);
        mv.visitInsn(Opcodes.LAND);
    }
    if (born != 0) {
        if (disabled == 0) {
            mv.visitVarInsn(Opcodes.LLOAD, vAlive);
        }
        mv.visitLdcInsn(born);
        mv.visitInsn(Opcodes.LOR);
    }
    if (disabled != 0 || born != 0) {
        mv.visitVarInsn(Opcodes.LSTORE, vAlive);
    }

    // update sleepy
    if (sleepy != 0) {
        mv.visitLdcInsn(~sleepy);
    } else {
        mv.visitLdcInsn(-1L);
    }
    mv.visitVarInsn(Opcodes.LSTORE, vSleepy);
}

From source file:br.usp.each.saeg.badua.core.internal.instr.LongUpdateProbe.java

License:Open Source License

@Override
public void accept(final MethodVisitor mv) {
    mv.visitVarInsn(Opcodes.LLOAD, vCovered);
    mv.visitMethodInsn(Opcodes.INVOKESTATIC, owner, InstrSupport.DATAMETHOD_NAME, InstrSupport.DATAMETHOD_DESC,
            false);/*from  w  ww  .ja  va2s .  c  o m*/
    InstrSupport.push(mv, index);
    mv.visitInsn(Opcodes.DUP2_X2);
    mv.visitInsn(Opcodes.LALOAD);
    mv.visitInsn(Opcodes.LOR);
    mv.visitInsn(Opcodes.LASTORE);
}

From source file:br.usp.each.saeg.badua.test.validation.MaxTest.java

License:Open Source License

@Override
@Before/*w  w  w . j a va2  s.co m*/
public void setUp() throws Exception {
    super.setUp();

    final int classVersion = Opcodes.V1_6;
    final int classAccessor = Opcodes.ACC_PUBLIC | Opcodes.ACC_SUPER;
    final String className = "Max";
    final String superName = "java/lang/Object";

    final int methodAccessor = Opcodes.ACC_PUBLIC | Opcodes.ACC_STATIC;
    final String methodName = "max";
    final String methodDesc = "([II)I";

    final ClassWriter cw = new ClassWriter(0);
    final MethodVisitor mw;

    cw.visit(classVersion, classAccessor, className, null, superName, null);
    mw = cw.visitMethod(methodAccessor, methodName, methodDesc, null, null);
    mw.visitCode();
    // block 0 (definitions {0, 1, 2, 3})
    mw.visitInsn(Opcodes.ICONST_0);
    mw.visitVarInsn(Opcodes.ISTORE, 2);
    mw.visitVarInsn(Opcodes.ALOAD, 0);
    mw.visitVarInsn(Opcodes.ILOAD, 2);
    mw.visitIincInsn(2, 1);
    mw.visitInsn(Opcodes.IALOAD);
    mw.visitVarInsn(Opcodes.ISTORE, 3);
    // block 1 (p-uses {1, 2})
    final Label backLoop = new Label();
    mw.visitLabel(backLoop);
    mw.visitVarInsn(Opcodes.ILOAD, 2);
    mw.visitVarInsn(Opcodes.ILOAD, 1);
    final Label breakLoop = new Label();
    mw.visitJumpInsn(Opcodes.IF_ICMPGE, breakLoop);
    // block 3 (p-uses {0, 2, 3})
    mw.visitVarInsn(Opcodes.ALOAD, 0);
    mw.visitVarInsn(Opcodes.ILOAD, 2);
    mw.visitInsn(Opcodes.IALOAD);
    mw.visitVarInsn(Opcodes.ILOAD, 3);
    final Label jump = new Label();
    mw.visitJumpInsn(Opcodes.IF_ICMPLE, jump);
    // block 5 (definitions {3}, uses {0, 2})
    mw.visitVarInsn(Opcodes.ALOAD, 0);
    mw.visitVarInsn(Opcodes.ILOAD, 2);
    mw.visitInsn(Opcodes.IALOAD);
    mw.visitVarInsn(Opcodes.ISTORE, 3);
    // block 4 (definitions {2}, uses {2})
    mw.visitLabel(jump);
    mw.visitIincInsn(2, 1);
    mw.visitJumpInsn(Opcodes.GOTO, backLoop);
    // block 2 ( uses {3})
    mw.visitLabel(breakLoop);
    mw.visitVarInsn(Opcodes.ILOAD, 3);
    mw.visitInsn(Opcodes.IRETURN);
    mw.visitMaxs(2, 4);
    mw.visitEnd();
    cw.visitEnd();

    final byte[] bytes = cw.toByteArray();
    klass = addClass(className, bytes);
    method = klass.getMethod(methodName, int[].class, int.class);
    classId = CRC64.checksum(bytes);

    RT.init(new RuntimeData());
}

From source file:cc.adf.metrics.agent.visitor.ApplicationModuleImplModifier.java

public static void addDetailNameMethod(ClassWriter cw) {
    MethodVisitor mv = cw.visitMethod(ACC_PRIVATE, "getDetailName", "()Ljava/lang/String;", null, null);
    mv.visitCode();/*from  w  ww.  ja  v a2s. co  m*/
    mv.visitVarInsn(ALOAD, 0);
    mv.visitMethodInsn(INVOKEVIRTUAL, "oracle/jbo/server/ApplicationModuleImpl", "isRoot", "()Z", false);
    Label l0 = new Label();
    mv.visitJumpInsn(IFEQ, l0);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitMethodInsn(INVOKESPECIAL, "oracle/jbo/server/ApplicationModuleImpl", "getName",
            "()Ljava/lang/String;", false);
    mv.visitInsn(ARETURN);
    mv.visitLabel(l0);
    mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
    mv.visitTypeInsn(NEW, "java/lang/StringBuilder");
    mv.visitInsn(DUP);
    mv.visitMethodInsn(INVOKESPECIAL, "java/lang/StringBuilder", "<init>", "()V", false);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitMethodInsn(INVOKESPECIAL, "oracle/jbo/server/ApplicationModuleImpl", "getRootApplicationModule",
            "()Loracle/jbo/server/ApplicationModuleImpl;", false);
    mv.visitMethodInsn(INVOKEVIRTUAL, "oracle/jbo/server/ApplicationModuleImpl", "getName",
            "()Ljava/lang/String;", false);
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append",
            "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
    mv.visitLdcInsn("::");
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append",
            "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitMethodInsn(INVOKESPECIAL, "oracle/jbo/server/ApplicationModuleImpl", "getName",
            "()Ljava/lang/String;", false);
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append",
            "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "toString", "()Ljava/lang/String;", false);
    mv.visitInsn(ARETURN);
    mv.visitMaxs(2, 1);
    mv.visitEnd();
}

From source file:ch.eiafr.cojac.Agent.java

License:Apache License

/**
* This method works only with the FloatReplacerClasses class
* It instruments it to create a static initializer block to set
* all the static variables used by the agent and injected in the 
* instrumented application./*  w w w  .  ja  v  a  2 s .  c  om*/
* Warning: this is not the only place to set these variables, see class
* "CojacReferences" !
* This is used when there is more than one classloader in the application
*/
private byte[] setGlobalFields(byte[] byteCode, ClassLoader loader) {
    ClassReader cr = new ClassReader(byteCode);
    ClassWriter cw = new ClassWriter(cr, ClassWriter.COMPUTE_FRAMES);
    ClassVisitor cv = new ClassVisitor(Opcodes.ASM5, cw) {
        @Override
        public void visit(int version, int access, String name, String signature, String superName,
                String[] interfaces) {
            super.visit(version, access, name, signature, superName, interfaces);
            MethodVisitor mv = cv.visitMethod(Opcodes.ACC_STATIC, "<clinit>", "()V", null, null);
            mv.visitLdcInsn(references.getDoubleWrapper());
            mv.visitMethodInsn(Opcodes.INVOKESTATIC, name, "setNgWrapper", "(Ljava/lang/String;)V", false);
            mv.visitLdcInsn(references.getNgWrapper());
            mv.visitMethodInsn(Opcodes.INVOKESTATIC, name, "setDoubleWrapper", "(Ljava/lang/String;)V", false);
            mv.visitLdcInsn(references.getFloatWrapper());
            mv.visitMethodInsn(Opcodes.INVOKESTATIC, name, "setFloatWrapper", "(Ljava/lang/String;)V", false);
            mv.visitLdcInsn(references.getBigDecimalPrecision());
            mv.visitMethodInsn(Opcodes.INVOKESTATIC, name, "setBigDecimalPrecision", "(I)V", false);
            mv.visitLdcInsn(references.getStabilityThreshold());
            mv.visitMethodInsn(Opcodes.INVOKESTATIC, name, "setStabilityThreshold", "(D)V", false);
            mv.visitLdcInsn(references.getCheckUnstableComparisons() ? 1 : 0);
            mv.visitMethodInsn(Opcodes.INVOKESTATIC, name, "setCheckUnstableComparisons", "(Z)V", false);
            mv.visitInsn(Opcodes.RETURN);
            mv.visitMaxs(0, 0);
        }
    };
    cr.accept(cv, ClassReader.EXPAND_FRAMES);
    return cw.toByteArray();
}

From source file:ch.eiafr.cojac.instrumenters.FloatProxyMethod.java

License:Apache License

public void nativeCall(MethodVisitor mv, int access, String owner, String name, String desc) {
    boolean isStatic = (access & ACC_STATIC) > 0;
    String newDesc = replaceFloatMethodDescription(desc);
    MethodVisitor newMv = ccv.addProxyMethod(access & ~ACC_NATIVE, name, newDesc, null, null);
    int varIndex = 0;
    int opcode = INVOKESTATIC;
    if (!isStatic) {
        newMv.visitVarInsn(ALOAD, 0);// ww w.j  a  v  a2 s  .c om
        varIndex = 1;
        opcode = INVOKEVIRTUAL;
    }
    ConversionContext cc = new ConversionContext(opcode, owner, name, desc);
    Type args[] = Type.getArgumentTypes(newDesc);
    for (Type type : args) {
        newMv.visitVarInsn(getLoadOpcode(type), varIndex);
        varIndex += type.getSize();
    }
    convertArgumentsToReal(mv, cc);
    // stack >> [target] allParamsArr [target] allParamsArr
    maybeConvertTarget(mv, cc.opcode, cc.owner);
    // stack >> [target] allParamsArr [newTarget] allParamsArr
    explodeOnStack(mv, cc, true);
    // stack >> [target] allParamsArr [newTarget] nprm0 nprm1 nprm2...
    newMv.visitMethodInsn(opcode, owner, name, desc, false);
    // stack >> [target] allParamsArr [possibleResult]
    checkArraysAfterCall(newMv, cc.convertedArrays, desc);
    // stack >> [target] [possibleResult]
    convertReturnType(newMv, desc);
    // stack >> [target] [newPossibleResult]
    newMv.visitInsn(afterFloatReplacement(Type.getReturnType(desc)).getOpcode(IRETURN));
    // stack >> [target]       // left on the stack... not a problem!
    newMv.visitMaxs(0, 0);
}

From source file:ch.eiafr.cojac.instrumenters.FloatProxyMethod.java

License:Apache License

public void proxyCall(MethodVisitor mv, ConversionContext cc, boolean tryUnproxied) {
    if (tryUnproxied && cc.opcode == INVOKEVIRTUAL || cc.opcode == INVOKEINTERFACE) { //|| opcode==INVOKEINTERFACE  false && 
        //proxyCallAndStupidVars(mv, opcode, owner, name, desc);
        proxyCallBetterWithVars(mv, cc);
        return;/*from   w w  w. ja  v a2s. com*/
    }
    // stack >> [target] nprm0 nprm1 nprm2...
    convertArgumentsToReal(mv, cc);
    // stack >> [target] allParamsArr [target] allParamsArr
    maybeConvertTarget(mv, cc.opcode, cc.owner);
    // stack >> [target] allParamsArr [newTarget] allParamsArr
    explodeOnStack(mv, cc, true);
    // stack >> [target] allParamsArr [newTarget] nprm0 nprm1 nprm2...
    mv.visitMethodInsn(cc.opcode, cc.owner, cc.name, cc.jDesc, (cc.opcode == INVOKEINTERFACE));
    // stack >> [target] allParamsArr [possibleResult]
    checkArraysAfterCall(mv, cc.convertedArrays, cc.jDesc);
    // stack >> [target] [possibleResult]
    int resultWidth = Type.getReturnType(cc.jDesc).getSize();
    if (hasTarget(cc.opcode)) {
        if (resultWidth == 0) {
            mv.visitInsn(POP);
        } else if (resultWidth == 1) {
            mv.visitInsn(SWAP);
            mv.visitInsn(POP);
        } else { // resultWidth==2) 
            mv.visitInsn(DUP2_X1);
            // stack >> possibleResult target possibleResult
            mv.visitInsn(POP2);
            // stack >> possibleResult target
            mv.visitInsn(POP);
            // stack >> possibleResult
        }
    }
    // stack >> [possibleResult]
    convertReturnType(mv, cc.jDesc);
    // stack >> [newPossibleResult]
}

From source file:ch.eiafr.cojac.instrumenters.FloatProxyMethod.java

License:Apache License

public void proxyCallBetterWithVars(MethodVisitor mv, ConversionContext cc) {
    final String pm = "possibleMethod";
    final String pmDesc = "(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/String;)Ljava/lang/reflect/Method;";
    final String myInvoke = "myInvoke";
    final String myInvokeDesc = "(Ljava/lang/reflect/Method;Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;";
    // checkNotNullStack();
    // int paramArrayVar = mla.paramArrayVar();
    // int targetVar = mla.targetVar();
    // Label lEndTry = new Label(); 
    Label lBeginHandler = new Label(), lEndHandler = new Label();
    Type cojReturnType = Type.getReturnType(cc.cDesc);
    // stack >> target prm0 prm1 prm2...
    convertArgumentsToReal(mv, cc);//from   w ww .ja  v a 2 s  . c o  m
    // stack >> target allParamsArr target allParamsArr
    // {
    //            mv.visitVarInsn(ASTORE, paramArrayVar);
    //            // stack >> target allParamsArr target
    //            //--------- String targetType=stackTopClass();
    //            mv.visitVarInsn(ASTORE, targetVar);
    // }
    mv.visitInsn(POP);
    mv.visitInsn(POP);
    // stack >> target allParamsArr
    Object[] localsInFrame = aaAfter.locals.toArray();
    mv.visitInsn(SWAP);
    // stack >> allParamsArr target
    mv.visitInsn(DUP_X1);
    // stack >> target allParamsArr target
    mv.visitLdcInsn(cc.name);
    // stack >> target allParamsArr target methName
    mv.visitLdcInsn(cc.cDesc);
    // stack >> target allParamsArr target methName methDesc
    mv.visitMethodInsn(INVOKESTATIC, DN_NAME, pm, pmDesc, false);
    // stack >> target allParamsArr nullOrMeth
    mv.visitInsn(DUP);
    // stack >> target allParamsArr nullOrMeth nullOrMeth

    ArrayList<Object> scl = new ArrayList<Object>(aaAfter.stack);
    scl.remove(scl.size() - 1); // remove the last nullOrMeth
    Object[] stackContent = scl.toArray(); //target allParamsArr nullOrMeth

    mv.visitJumpInsn(IFNULL, lBeginHandler);
    aaAfter.visitFrame(F_NEW, localsInFrame.length, localsInFrame, stackContent.length, stackContent);
    // stack >> target allParamsArr meth
    mv.visitInsn(DUP_X2);
    // stack >> meth target allParamsArr meth
    mv.visitInsn(POP);
    // stack >> meth target allParamsArr
    mv.visitLdcInsn(cc.inArgs.length);
    // stack >> meth target allParamsArr n
    mv.visitInsn(AALOAD);
    // stack >> meth target asObjPrm
    mv.visitTypeInsn(CHECKCAST, "[" + OBJ_TYPE.getDescriptor());
    // stack >> meth target appropriatePrmArr 
    mv.visitMethodInsn(INVOKESTATIC, DN_NAME, myInvoke, myInvokeDesc, false);
    // stack >> [ResultOrNull]
    if (cc.hasReturn()) {
        if (cc.hasPrimitiveResultInCojacVersion()) {
            String jWrapperName = getJWrapper(cojReturnType).getInternalName();
            mv.visitTypeInsn(CHECKCAST, jWrapperName);
            mv.visitMethodInsn(INVOKEVIRTUAL, jWrapperName, getWrapperToPrimitiveMethod(cojReturnType),
                    "()" + cojReturnType.getDescriptor(), false);
        } else {
            mv.visitTypeInsn(CHECKCAST, cojReturnType.getInternalName());
        }
    } else {
        mv.visitInsn(POP); // discard the dummy null result
    }
    // stack >> [possibleResult]
    //;; mv.visitLabel(lEndTry);
    mv.visitJumpInsn(GOTO, lEndHandler); // and we're done !

    ;
    ;
    mv.visitLabel(lBeginHandler);
    // stack >> target allParamsArr null
    // CAUTION: we bypass 'mv' and directly talk to the AnalyzerAdapter!
    aaAfter.visitFrame(F_NEW, localsInFrame.length, localsInFrame, stackContent.length, stackContent);
    //checkNotNullStack();  //was during debugging - removed
    mv.visitInsn(POP); // we drop the null (no-method) slot
    maybeConvertTarget(mv, cc.opcode, cc.owner);
    // stack >> newTarget allParamsArr
    mv.visitInsn(DUP_X1);
    // stack >> allParamsArr newTarget allParamsArr
    explodeOnStack(mv, cc, true);
    // stack >> allParamsArr newTarget nprm0 nprm1 nprm2...
    mv.visitMethodInsn(cc.opcode, cc.owner, cc.name, cc.jDesc, (cc.opcode == INVOKEINTERFACE));
    // stack >> allParamsArr [possibleResult]
    checkArraysAfterCall(mv, cc.convertedArrays, cc.jDesc);
    // stack >> [possibleResult]
    convertReturnType(mv, cc.jDesc);
    // stack >> [newPossibleResult]
    ;
    ;
    mv.visitLabel(lEndHandler);
    scl.remove(scl.size() - 1); // remove 3 slots: target allParamsArr nullOrMeth
    scl.remove(scl.size() - 1);
    scl.remove(scl.size() - 1);
    stackContent = scl.toArray();
    stackContent = addReturnTypeTo(stackContent, cojReturnType);
    aaAfter.visitFrame(F_NEW, localsInFrame.length, localsInFrame, stackContent.length, stackContent);
}

From source file:ch.eiafr.cojac.instrumenters.FloatProxyMethod.java

License:Apache License

private void convertArgumentsToReal(MethodVisitor mv, ConversionContext cc) {
    String convertDesc = Type.getMethodDescriptor(OBJ_ARRAY_TYPE, cc.inArgs);
    createConvertMethod(convertDesc, cc);
    // stack >> [target] prm0 prm1 prm2...
    mv.visitMethodInsn(INVOKESTATIC, crtClassName, COJAC_TYPE_CONVERT_NAME, convertDesc, false);
    // stack >> [target] allParamsArr
    // We'll need a reference to converted arrays (for merging purposes)
    // and a copy of the target (trying first without proxy)...
    if (hasTarget(cc.opcode)) {
        mv.visitInsn(DUP2);
    } else {/*from w  w  w  .j a v a 2  s .co  m*/
        mv.visitInsn(DUP);
    }
    // stack >> [target] allParamsArr [target] allParamsArr
}