Examples with SelfRelativePointer com.ibm.j9ddr.vm29.pointer.SelfRelativePointer used on opensource projects

Example 1 with SelfRelativePointer

use of com.ibm.j9ddr.vm29.pointer.SelfRelativePointer in project openj9 by eclipse.

the class RomClassWalker method allSlotsInOptionalInfoDo.

void allSlotsInOptionalInfoDo() throws CorruptDataException {
    U32Pointer optionalInfo = romClass.optionalInfo();
    SelfRelativePointer cursor = SelfRelativePointer.cast(optionalInfo);
    if (romClass.optionalFlags().anyBitsIn(J9NonbuilderConstants.J9_ROMCLASS_OPTINFO_SOURCE_FILE_NAME)) {
        classWalkerCallback.addSlot(clazz, SlotType.J9_ROM_UTF8, cursor, "optionalFileNameUTF8");
        cursor = cursor.add(1);
    }
    if (romClass.optionalFlags().anyBitsIn(J9NonbuilderConstants.J9_ROMCLASS_OPTINFO_GENERIC_SIGNATURE)) {
        classWalkerCallback.addSlot(clazz, SlotType.J9_ROM_UTF8, cursor, "optionalGenSigUTF8");
        cursor = cursor.add(1);
    }
    if (romClass.optionalFlags().anyBitsIn(J9NonbuilderConstants.J9_ROMCLASS_OPTINFO_SOURCE_DEBUG_EXTENSION)) {
        classWalkerCallback.addSlot(clazz, SlotType.J9_ROM_UTF8, cursor, "optionalSourceDebugExtUTF8");
        cursor = cursor.add(1);
    }
    if (romClass.optionalFlags().anyBitsIn(J9NonbuilderConstants.J9_ROMCLASS_OPTINFO_ENCLOSING_METHOD)) {
        classWalkerCallback.addSlot(clazz, SlotType.J9_SRP, cursor, "optionalEnclosingMethodSRP");
        allSlotsInEnclosingObjectDo(J9EnclosingObjectPointer.cast(cursor.get()));
        cursor = cursor.add(1);
    }
    if (romClass.optionalFlags().anyBitsIn(J9NonbuilderConstants.J9_ROMCLASS_OPTINFO_SIMPLE_NAME)) {
        classWalkerCallback.addSlot(clazz, SlotType.J9_ROM_UTF8, cursor, "optionalSimpleNameUTF8");
        cursor = cursor.add(1);
    }
    if (romClass.optionalFlags().allBitsIn(J9NonbuilderConstants.J9_ROMCLASS_OPTINFO_VERIFY_EXCLUDE)) {
        classWalkerCallback.addSlot(clazz, SlotType.J9_U32, cursor, "optionalVerifyExclude");
        cursor = cursor.add(1);
    }
    if (romClass.optionalFlags().allBitsIn(J9NonbuilderConstants.J9_ROMCLASS_OPTINFO_CLASS_ANNOTATION_INFO)) {
        classWalkerCallback.addSlot(clazz, SlotType.J9_SRP, cursor, "classAnnotationsSRP");
        allSlotsInAnnotationDo(U32Pointer.cast(cursor.get()), "classAnnotations");
        cursor = cursor.add(1);
    }
    classWalkerCallback.addSection(clazz, optionalInfo, cursor.getAddress() - optionalInfo.getAddress(), "optionalInfo", true);
}

Example 2 with SelfRelativePointer

use of com.ibm.j9ddr.vm29.pointer.SelfRelativePointer in project openj9 by eclipse.

the class RomClassWalker method allSlotsInExceptionInfoDo.

void allSlotsInExceptionInfoDo(J9ExceptionInfoPointer exceptionInfo) throws CorruptDataException {
    J9ExceptionHandlerPointer exceptionHandler;
    SelfRelativePointer throwNames;
    classWalkerCallback.addSlot(clazz, SlotType.J9_U16, exceptionInfo.catchCountEA(), "catchCount");
    classWalkerCallback.addSlot(clazz, SlotType.J9_U16, exceptionInfo.throwCountEA(), "throwCount");
    exceptionHandler = ROMHelp.J9EXCEPTIONINFO_HANDLERS(exceptionInfo);
    /* endian safe */
    for (int i = 0; i < exceptionInfo.catchCount().longValue(); i++) {
        classWalkerCallback.addSlot(clazz, SlotType.J9_U32, exceptionHandler.startPCEA(), "startPC");
        classWalkerCallback.addSlot(clazz, SlotType.J9_U32, exceptionHandler.endPCEA(), "endPC");
        classWalkerCallback.addSlot(clazz, SlotType.J9_U32, exceptionHandler.handlerPCEA(), "handlerPC");
        classWalkerCallback.addSlot(clazz, SlotType.J9_U32, exceptionHandler.exceptionClassIndexEA(), "exceptionClassIndex");
        exceptionHandler = exceptionHandler.add(1);
    }
    /* not using J9EXCEPTIONINFO_THROWNAMES...we're already there */
    throwNames = SelfRelativePointer.cast(exceptionHandler);
    for (int i = 0; i < exceptionInfo.throwCount().intValue(); i++, throwNames = throwNames.add(1)) {
        classWalkerCallback.addSlot(clazz, SlotType.J9_ROM_UTF8, throwNames, "throwNameUTF8");
    }
}

Example 3 with SelfRelativePointer

use of com.ibm.j9ddr.vm29.pointer.SelfRelativePointer in project openj9 by eclipse.

the class J9BCUtil method dumpCallSiteData.

/**
 * This method is Java implementation of rdump.c#dumpCallSiteData function.
 * This method is called when dumping a ROMClass.
 * This method has only affect for invokedDynamic stuff,
 * for other ROMClasses, there wont be anything to print since their callsite and bsm count are zero.
 *
 * @param out PrintStream to print the user info to the console
 * @param romClass ROMClass address in the dump file.
 *
 * @throws CorruptDataException
 */
private static void dumpCallSiteData(PrintStream out, J9ROMClassPointer romClass) throws CorruptDataException {
    int HEX_RADIX = 16;
    long callSiteCount = romClass.callSiteCount().longValue();
    long bsmCount = romClass.bsmCount().longValue();
    SelfRelativePointer callSiteData = SelfRelativePointer.cast(romClass.callSiteData());
    U16Pointer bsmIndices = U16Pointer.cast(callSiteData.addOffset(4 * callSiteCount));
    if (0 != callSiteCount) {
        out.println(String.format("  Call Sites (%d):\n", callSiteCount));
        for (int i = 0; i < callSiteCount; i++) {
            J9ROMNameAndSignaturePointer nameAndSig = J9ROMNameAndSignaturePointer.cast(callSiteData.add(i).get());
            out.println("    Name: " + J9UTF8Helper.stringValue(nameAndSig.name()));
            out.println("    Signature: " + J9UTF8Helper.stringValue(nameAndSig.signature()));
            out.println("    Bootstrap Method Index: " + bsmIndices.at(i).longValue());
            out.println();
        }
    }
    if (0 != bsmCount) {
        J9ROMConstantPoolItemPointer constantPool = ConstantPoolHelpers.J9_ROM_CP_FROM_ROM_CLASS(romClass);
        U32Pointer cpShapeDescription = romClass.cpShapeDescription();
        U16Pointer bsmDataCursor = bsmIndices.add(callSiteCount);
        out.println(String.format("  Bootstrap Methods (%d):", bsmCount));
        for (int i = 0; i < bsmCount; i++) {
            J9ROMMethodHandleRefPointer methodHandleRef = J9ROMMethodHandleRefPointer.cast(constantPool.add(bsmDataCursor.at(0).longValue()));
            bsmDataCursor = bsmDataCursor.add(1);
            /* methodRef will be either a field or a method ref - they both have the same shape so we can pretend it is always a methodref */
            J9ROMMethodRefPointer methodRef = J9ROMMethodRefPointer.cast(constantPool.add(methodHandleRef.methodOrFieldRefIndex().longValue()));
            J9ROMClassRefPointer classRef = J9ROMClassRefPointer.cast(constantPool.add(methodRef.classRefCPIndex().longValue()));
            J9ROMNameAndSignaturePointer nameAndSig = methodRef.nameAndSignature();
            long bsmArgumentCount = bsmDataCursor.at(0).longValue();
            bsmDataCursor = bsmDataCursor.add(1);
            out.println("    Name: " + J9UTF8Helper.stringValue(classRef.name()) + "." + J9UTF8Helper.stringValue(nameAndSig.name()));
            out.println("    Signature: " + J9UTF8Helper.stringValue(nameAndSig.signature()));
            out.println(String.format("    Bootstrap Method Arguments (%d):", bsmArgumentCount));
            for (; 0 != bsmArgumentCount; bsmArgumentCount--) {
                long argCPIndex = bsmDataCursor.at(0).longValue();
                bsmDataCursor = bsmDataCursor.add(1);
                J9ROMConstantPoolItemPointer item = constantPool.add(argCPIndex);
                long shapeDesc = ConstantPoolHelpers.J9_CP_TYPE(cpShapeDescription, (int) argCPIndex);
                if (shapeDesc == J9CPTYPE_CLASS) {
                    J9ROMClassRefPointer romClassRef = J9ROMClassRefPointer.cast(item);
                    out.println("      Class: " + J9UTF8Helper.stringValue(romClassRef.name()));
                } else if (shapeDesc == J9CPTYPE_STRING) {
                    J9ROMStringRefPointer romStringRef = J9ROMStringRefPointer.cast(item);
                    out.println("      String: " + J9UTF8Helper.stringValue(romStringRef.utf8Data()));
                } else if (shapeDesc == J9CPTYPE_INT) {
                    J9ROMSingleSlotConstantRefPointer singleSlotConstantRef = J9ROMSingleSlotConstantRefPointer.cast(item);
                    out.println("      Int: " + singleSlotConstantRef.data().getHexValue());
                } else if (shapeDesc == J9CPTYPE_FLOAT) {
                    J9ROMSingleSlotConstantRefPointer singleSlotConstantRef = J9ROMSingleSlotConstantRefPointer.cast(item);
                    FloatPointer floatPtr = FloatPointer.cast(singleSlotConstantRef.dataEA());
                    out.println("      Float: " + floatPtr.getHexValue() + " (" + floatPtr.floatAt(0) + ")");
                } else if (shapeDesc == J9CPTYPE_LONG) {
                    String hexValue = "";
                    if (J9BuildFlags.env_littleEndian) {
                        hexValue += item.slot2().getHexValue();
                        hexValue += item.slot1().getHexValue().substring(2);
                    } else {
                        hexValue += item.slot1().getHexValue();
                        hexValue += item.slot2().getHexValue().substring(2);
                    }
                    long longValue = Long.parseLong(hexValue.substring(2), HEX_RADIX);
                    out.println("      Long: " + hexValue + "(" + longValue + ")");
                } else if (shapeDesc == J9CPTYPE_DOUBLE) {
                    String hexValue = "";
                    if (J9BuildFlags.env_littleEndian) {
                        hexValue += item.slot2().getHexValue();
                        hexValue += item.slot1().getHexValue().substring(2);
                    } else {
                        hexValue += item.slot1().getHexValue();
                        hexValue += item.slot2().getHexValue().substring(2);
                    }
                    long longValue = Long.parseLong(hexValue.substring(2), HEX_RADIX);
                    double doubleValue = Double.longBitsToDouble(longValue);
                    out.println("      Double: " + hexValue + "(" + Double.toString(doubleValue) + ")");
                } else if (shapeDesc == J9CPTYPE_FIELD) {
                    J9ROMFieldRefPointer romFieldRef = J9ROMFieldRefPointer.cast(item);
                    classRef = J9ROMClassRefPointer.cast(constantPool.add(romFieldRef.classRefCPIndex()));
                    nameAndSig = romFieldRef.nameAndSignature();
                    out.println("      Field: " + J9UTF8Helper.stringValue(classRef.name()) + "." + J9UTF8Helper.stringValue(nameAndSig.name()) + " " + J9UTF8Helper.stringValue(nameAndSig.signature()));
                } else if ((shapeDesc == J9CPTYPE_INSTANCE_METHOD) || (shapeDesc == J9CPTYPE_STATIC_METHOD) || (shapeDesc == J9CPTYPE_HANDLE_METHOD) || (shapeDesc == J9CPTYPE_INTERFACE_METHOD)) {
                    J9ROMMethodRefPointer romMethodRef = J9ROMMethodRefPointer.cast(item);
                    classRef = J9ROMClassRefPointer.cast(constantPool.add(romMethodRef.classRefCPIndex()));
                    nameAndSig = romMethodRef.nameAndSignature();
                    out.println("      Method: " + J9UTF8Helper.stringValue(classRef.name()) + "." + J9UTF8Helper.stringValue(nameAndSig.name()) + " " + J9UTF8Helper.stringValue(nameAndSig.signature()));
                } else if (shapeDesc == J9CPTYPE_METHOD_TYPE) {
                    J9ROMMethodTypeRefPointer romMethodTypeRef = J9ROMMethodTypeRefPointer.cast(item);
                    out.println("      Method Type: " + J9UTF8Helper.stringValue(J9UTF8Pointer.cast(romMethodTypeRef.signature())));
                } else if (shapeDesc == J9CPTYPE_METHODHANDLE) {
                    methodHandleRef = J9ROMMethodHandleRefPointer.cast(item);
                    methodRef = J9ROMMethodRefPointer.cast(constantPool.add(methodHandleRef.methodOrFieldRefIndex()));
                    classRef = J9ROMClassRefPointer.cast(constantPool.add(methodRef.classRefCPIndex()));
                    nameAndSig = methodRef.nameAndSignature();
                    out.print("      Method Handle: " + J9UTF8Helper.stringValue(classRef.name()) + "." + J9UTF8Helper.stringValue(nameAndSig.name()));
                    long methodType = methodHandleRef.handleTypeAndCpType().rightShift((int) J9DescriptionCpTypeShift).longValue();
                    if ((methodType == MH_REF_GETFIELD) || (methodType == MH_REF_PUTFIELD) || (methodType == MH_REF_GETSTATIC) || (methodType == MH_REF_PUTSTATIC)) {
                        out.print(" ");
                    }
                    out.println(J9UTF8Helper.stringValue(nameAndSig.signature()));
                } else {
                    out.println("      <unknown type>");
                }
            }
        }
    }
}

Example 4 with SelfRelativePointer

use of com.ibm.j9ddr.vm29.pointer.SelfRelativePointer in project openj9 by eclipse.

the class J9BCUtil method j9bcutil_dumpRomClass.

public static void j9bcutil_dumpRomClass(PrintStream out, J9ROMClassPointer romClass, long flags) throws CorruptDataException {
    out.append((String.format("ROM Size: 0x%s (%d)", Long.toHexString(romClass.romSize().longValue()), romClass.romSize().longValue())));
    out.append(nl);
    out.append(String.format("Class Name: %s", J9UTF8Helper.stringValue(romClass.className())));
    out.append(nl);
    if (romClass.superclassName().isNull()) {
        out.append("Superclass Name: <none>");
    } else {
        out.append(String.format("Superclass Name: %s", J9UTF8Helper.stringValue(romClass.superclassName())));
    }
    out.append(nl);
    /* dump the source file name */
    dumpSourceFileName(out, romClass, flags);
    /* dump the simple name */
    dumpSimpleName(out, romClass, flags);
    /* dump the class generic signature */
    dumpGenericSignature(out, romClass, flags);
    /* dump the enclosing method */
    dumpEnclosingMethod(out, romClass, flags);
    out.append(String.format("Sun Access Flags (0x%s): ", Long.toHexString(romClass.modifiers().longValue())));
    dumpModifiers(out, romClass.modifiers().longValue(), MODIFIERSOURCE_CLASS, ONLY_SPEC_MODIFIERS);
    out.append(String.format("J9  Access Flags (0x%s): ", Long.toHexString(romClass.extraModifiers().longValue())));
    dumpClassJ9ExtraModifiers(out, romClass.extraModifiers().longValue());
    out.append(nl);
    out.append(String.format("Class file version: %d.%d", romClass.majorVersion().longValue(), romClass.minorVersion().longValue()));
    out.append(nl);
    out.append(String.format("Instance Shape: 0x%s", Long.toHexString(romClass.instanceShape().longValue())));
    out.append(nl);
    out.append(String.format("Intermediate Class Data (%d bytes): %s", romClass.intermediateClassDataLength().longValue(), Long.toHexString(romClass.intermediateClassData().longValue())));
    out.append(nl);
    out.append(String.format("Maximum Branch Count: %d", romClass.maxBranchCount().longValue()));
    out.append(nl);
    out.append(String.format("Interfaces (%d):" + nl, romClass.interfaceCount().longValue()));
    if (!romClass.interfaceCount().eq(0)) {
        SelfRelativePointer interfaces = romClass.interfaces();
        long interfaceCount = romClass.interfaceCount().longValue();
        for (int i = 0; i < interfaceCount; i++) {
            out.append("  ");
            J9UTF8Pointer interfaceName = J9UTF8Pointer.cast(interfaces.get());
            out.append(J9UTF8Helper.stringValue(interfaceName));
            out.append(nl);
            interfaces = interfaces.add(1);
        }
    }
    J9UTF8Pointer outerClassName = romClass.outerClassName();
    if (!outerClassName.isNull()) {
        out.append("Declaring Class: " + J9UTF8Helper.stringValue(romClass.outerClassName()));
        out.append(nl);
        out.append(String.format("Member Access Flags (0x%s): ", Long.toHexString(romClass.memberAccessFlags().longValue())));
        dumpModifiers(out, romClass.memberAccessFlags().longValue(), MODIFIERSOURCE_CLASS, ONLY_SPEC_MODIFIERS);
        out.append(nl);
        outerClassName = outerClassName.add(1);
    }
    long innerClassCount = romClass.innerClassCount().longValue();
    if (innerClassCount != 0) {
        SelfRelativePointer innerClasses = romClass.innerClasses();
        out.append(String.format("Declared Classes (%d):" + nl, innerClassCount));
        for (int i = 0; i < innerClassCount; i++) {
            J9UTF8Pointer innerClassName = J9UTF8Pointer.cast(innerClasses.get());
            out.append("   " + J9UTF8Helper.stringValue(innerClassName));
            innerClasses = innerClasses.add(1);
        }
    }
    U32 romFieldCount = romClass.romFieldCount();
    out.append(String.format("Fields (%d):" + nl, romFieldCount.longValue()));
    J9ROMFieldShapeIterator iterator = new J9ROMFieldShapeIterator(romClass.romFields(), romFieldCount);
    while (iterator.hasNext()) {
        J9ROMFieldShapePointer currentField = (J9ROMFieldShapePointer) iterator.next();
        if (!currentField.modifiers().bitAnd(J9JavaAccessFlags.J9AccStatic).eq(0)) {
            dumpRomStaticField(out, currentField, flags);
        } else {
            dumpRomField(out, currentField, flags);
        }
        out.append(nl);
    }
    dumpCPShapeDescription(out, romClass, flags);
    long romMethodsCount = romClass.romMethodCount().longValue();
    out.append(String.format("Methods (%d):" + nl, romMethodsCount));
    J9ROMMethodPointer romMethod = romClass.romMethods();
    for (int i = 0; i < romClass.romMethodCount().intValue(); i++) {
        J9BCUtil.j9bcutil_dumpRomMethod(out, romMethod, romClass, flags, 0);
        romMethod = ROMHelp.nextROMMethod(romMethod);
    }
    /* dump source debug extension */
    dumpSourceDebugExtension(out, romClass, flags);
    /* dump annotation info */
    dumpAnnotationInfo(out, romClass, flags);
    /* dump callsite data */
    dumpCallSiteData(out, romClass);
    /* dump split side tables */
    dumpStaticSplitSideTable(out, romClass);
    dumpSpecialSplitSideTable(out, romClass);
}

Example 5 with SelfRelativePointer

use of com.ibm.j9ddr.vm29.pointer.SelfRelativePointer in project openj9 by eclipse.

the class DTFJJavaClass method getInterfaces.

@SuppressWarnings("rawtypes")
public Iterator getInterfaces() {
    ArrayList<Object> interfaceNames;
    int interfaceCount;
    SelfRelativePointer interfaceName;
    try {
        // a failure in the following calls mean that we cannot find any interfaces
        interfaceCount = j9class.romClass().interfaceCount().intValue();
        if (interfaceCount > 0xFFFF) {
            // class file format limits the number of interfaces to U2 (unsigned 2 bytes)
            String msg = String.format("Invalid number of interfaces for class@0x%s", Long.toHexString(j9class.getAddress()));
            throw new com.ibm.j9ddr.CorruptDataException(msg);
        }
        interfaceNames = new ArrayList<Object>(interfaceCount);
        interfaceName = j9class.romClass().interfaces();
    } catch (Throwable t) {
        CorruptData cd = J9DDRDTFJUtils.handleAsCorruptData(DTFJContext.getProcess(), t);
        return corruptIterator(cd);
    }
    // a failure in the loop should return what we've found so far + a corrupt data
    try {
        for (int i = 0; i < interfaceCount; i++) {
            VoidPointer namePointer = interfaceName.add(i).get();
            // a failure to get the name means we can still move to the next iface
            try {
                interfaceNames.add(J9UTF8Helper.stringValue(J9UTF8Pointer.cast(namePointer)));
            } catch (Throwable t) {
                CorruptData cd = J9DDRDTFJUtils.handleAsCorruptData(DTFJContext.getProcess(), t);
                interfaceNames.add(cd);
            }
        }
    } catch (Throwable t) {
        CorruptData cd = J9DDRDTFJUtils.handleAsCorruptData(DTFJContext.getProcess(), t);
        interfaceNames.add(cd);
    }
    return interfaceNames.iterator();
}