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

Example 1 with FloatPointer

use of com.ibm.j9ddr.vm29.pointer.FloatPointer 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 2 with FloatPointer

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

the class J9StaticsCommand method run.

public void run(String command, String[] args, Context context, PrintStream out) throws DDRInteractiveCommandException {
    try {
        if (args.length != 1) {
            CommandUtils.dbgPrint(out, "Usage: !j9statics <classAddress>\n");
            return;
        }
        long address = CommandUtils.parsePointer(args[0], J9BuildFlags.env_data64);
        J9ClassPointer ramClass = J9ClassPointer.cast(address);
        J9ROMClassPointer romClass = ramClass.romClass();
        J9UTF8Pointer className = romClass.className();
        CommandUtils.dbgPrint(out, "Static fields in %s:\n", J9UTF8Helper.stringValue(className));
        Iterator<J9ObjectFieldOffset> ofoIterator = J9ObjectFieldOffsetIterator.J9ObjectFieldOffsetIteratorFor(ramClass, J9ClassHelper.superclass(ramClass), new U32(J9ROMFieldOffsetWalkState.J9VM_FIELD_OFFSET_WALK_INCLUDE_STATIC));
        while (ofoIterator.hasNext()) {
            J9ObjectFieldOffset fieldOffset = ofoIterator.next();
            J9ROMFieldShapePointer field = fieldOffset.getField();
            String name = J9ROMFieldShapeHelper.getName(field);
            String sig = J9ROMFieldShapeHelper.getSignature(field);
            UDATAPointer fieldAddress = ramClass.ramStatics().addOffset(fieldOffset.getOffsetOrAddress());
            switch(sig.charAt(0)) {
                case 'L':
                case '[':
                    CommandUtils.dbgPrint(out, "\t%s %s %s (!j9romstaticstringfieldshape %s) = !j9object %s\n", fieldAddress.getHexAddress(), name, sig, field.getHexAddress(), fieldAddress.at(0).getHexValue());
                    break;
                case 'D':
                    DoublePointer doublePointer = DoublePointer.cast(fieldAddress);
                    CommandUtils.dbgPrint(out, "\t%s %s %s (!j9romstaticdoublefieldshape %s) = %s (%s)\n", fieldAddress.getHexAddress(), name, sig, field.getHexAddress(), doublePointer.getHexValue(), new Double(doublePointer.doubleAt(0)).toString());
                    break;
                case 'F':
                    FloatPointer floatPointer = FloatPointer.cast(fieldAddress);
                    CommandUtils.dbgPrint(out, "\t%s %s %s (!j9romstaticsinglefieldshape %s) = %s (%s)\n", fieldAddress.getHexAddress(), name, sig, field.getHexAddress(), floatPointer.getHexValue(), new Float(floatPointer.floatAt(0)).toString());
                    break;
                case 'J':
                    I64Pointer longPointer = I64Pointer.cast(fieldAddress);
                    CommandUtils.dbgPrint(out, "\t%s %s %s (!j9romstaticdoublefieldshape %s) = %s (%d)\n", fieldAddress.getHexAddress(), name, sig, field.getHexAddress(), longPointer.getHexValue(), longPointer.at(0).longValue());
                    break;
                case 'I':
                    I32Pointer intPointer = I32Pointer.cast(fieldAddress);
                    CommandUtils.dbgPrint(out, "\t%s %s %s (!j9romstaticsinglefieldshape %s) = %s (%d)\n", fieldAddress.getHexAddress(), name, sig, field.getHexAddress(), intPointer.getHexValue(), intPointer.at(0).intValue());
                    break;
                case 'B':
                    I8Pointer bytePointer = I8Pointer.cast(fieldAddress);
                    CommandUtils.dbgPrint(out, "\t%s %s %s (!j9romstaticsinglefieldshape %s) = %s (%s)\n", fieldAddress.getHexAddress(), name, sig, field.getHexAddress(), bytePointer.getHexValue(), bytePointer.at(0).byteValue());
                    break;
                case 'S':
                    I16Pointer shortPointer = I16Pointer.cast(fieldAddress);
                    CommandUtils.dbgPrint(out, "\t%s %s %s (!j9romstaticsinglefieldshape %s) = %s (%d)\n", fieldAddress.getHexAddress(), name, sig, field.getHexAddress(), shortPointer.getHexValue(), shortPointer.at(0).shortValue());
                    break;
                case 'Z':
                    BoolPointer booleanPointer = BoolPointer.cast(fieldAddress);
                    CommandUtils.dbgPrint(out, "\t%s %s %s (!j9romstaticsinglefieldshape %s) = %s (%s)\n", fieldAddress.getHexAddress(), name, sig, field.getHexAddress(), booleanPointer.getHexValue(), booleanPointer.boolAt(0) ? "true" : "false");
                    break;
                default:
                    CommandUtils.dbgPrint(out, "\t%s %s %s (!j9romstaticsinglefieldshape %s) = %s\n", fieldAddress.getHexAddress(), name, sig, field.getHexAddress(), fieldAddress.at(0).getHexValue());
                    break;
            }
        }
    } catch (CorruptDataException e) {
        throw new DDRInteractiveCommandException(e);
    }
}

Example 3 with FloatPointer

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

the class FloatFormatter method format.

@Override
public FormatWalkResult format(String name, String type, String declaredType, int typeCode, long address, PrintStream out, Context context, IStructureFormatter structureFormatter) throws CorruptDataException {
    if (typeCode == TYPE_FLOAT) {
        FloatPointer ptr = FloatPointer.cast(address);
        out.print(ptr.floatAt(0));
        return FormatWalkResult.STOP_WALKING;
    } else {
        return FormatWalkResult.KEEP_WALKING;
    }
}