Examples with U16Pointer com.ibm.j9ddr.vm29.pointer.U16Pointer used on opensource projects

Example 1 with U16Pointer

use of com.ibm.j9ddr.vm29.pointer.U16Pointer in project openj9 by eclipse.

the class RomClassWalker method allSlotsInStaticSplitMethodRefIndexesDo.

void allSlotsInStaticSplitMethodRefIndexesDo() throws CorruptDataException {
    int count = romClass.staticSplitMethodRefCount().intValue();
    U16Pointer cursor = romClass.staticSplitMethodRefIndexes();
    if (count > 0) {
        classWalkerCallback.addSection(clazz, cursor, count * U16.SIZEOF, "staticSplitMethodRefIndexes", true);
        for (int i = 0; i < count; i++) {
            classWalkerCallback.addSlot(clazz, SlotType.J9_U16, cursor.add(i), "cpIndex");
        }
    }
}

Example 2 with U16Pointer

use of com.ibm.j9ddr.vm29.pointer.U16Pointer 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 3 with U16Pointer

use of com.ibm.j9ddr.vm29.pointer.U16Pointer in project openj9 by eclipse.

the class J9BCUtil method dumpStaticSplitSideTable.

/**
 * This method is Java implementation of rdump.c#dumpStaticSplitSideTable function.
 * This method is called when dumping a ROMClass.
 *
 * @param out PrintStream to print the user info to the console
 * @param romClass ROMClass address in the dump file.
 *
 * @throws CorruptDataException
 */
private static void dumpStaticSplitSideTable(PrintStream out, J9ROMClassPointer romClass) throws CorruptDataException {
    int splitTableCount = romClass.staticSplitMethodRefCount().intValue();
    if (splitTableCount > 0) {
        out.println(String.format("Static Split Table (%d):\n", splitTableCount));
        out.println("    SplitTable Index -> CP Index");
        U16Pointer cursor = romClass.staticSplitMethodRefIndexes();
        for (int i = 0; i < splitTableCount; i++) {
            cursor.add(i);
            out.println(String.format("    %16d -> %d", i, cursor.at(i).intValue()));
        }
    }
}

Example 4 with U16Pointer

use of com.ibm.j9ddr.vm29.pointer.U16Pointer in project openj9 by eclipse.

the class J9BCUtil method dumpSpecialSplitSideTable.

/**
 * This method is Java implementation of rdump.c#dumpSpecialSplitSideTable function.
 * This method is called when dumping a ROMClass.
 *
 * @param out PrintStream to print the user info to the console
 * @param romClass ROMClass address in the dump file.
 *
 * @throws CorruptDataException
 */
private static void dumpSpecialSplitSideTable(PrintStream out, J9ROMClassPointer romClass) throws CorruptDataException {
    int splitTableCount = romClass.specialSplitMethodRefCount().intValue();
    if (splitTableCount > 0) {
        out.println(String.format("Special Split Table (%d):\n", splitTableCount));
        out.println("    SplitTable Index -> CP Index");
        U16Pointer cursor = romClass.specialSplitMethodRefIndexes();
        for (int i = 0; i < splitTableCount; i++) {
            cursor.add(i);
            out.println(String.format("    %16d -> %d", i, cursor.at(i).intValue()));
        }
    }
}

Example 5 with U16Pointer

use of com.ibm.j9ddr.vm29.pointer.U16Pointer in project openj9 by eclipse.

the class RomClassWalker method allSlotsInSpecialSplitMethodRefIndexesDo.

void allSlotsInSpecialSplitMethodRefIndexesDo() throws CorruptDataException {
    int count = romClass.specialSplitMethodRefCount().intValue();
    U16Pointer cursor = romClass.specialSplitMethodRefIndexes();
    if (count > 0) {
        classWalkerCallback.addSection(clazz, cursor, count * U16.SIZEOF, "specialSplitMethodRefIndexes", true);
        for (int i = 0; i < count; i++) {
            classWalkerCallback.addSlot(clazz, SlotType.J9_U16, cursor.add(i), "cpIndex");
        }
    }
}