| /* |
| * Copyright (c) 2000, 2009, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code 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 Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| package sun.jvm.hotspot.runtime; |
| |
| import java.util.*; |
| import sun.jvm.hotspot.debugger.*; |
| import sun.jvm.hotspot.interpreter.*; |
| import sun.jvm.hotspot.oops.*; |
| import sun.jvm.hotspot.utilities.*; |
| |
| public class InterpretedVFrame extends JavaVFrame { |
| /** JVM state */ |
| public Method getMethod() { |
| return getFrame().getInterpreterFrameMethod(); |
| } |
| |
| public StackValueCollection getLocals() { |
| Method m = getMethod(); |
| |
| int length = (int) m.getMaxLocals(); |
| |
| if (m.isNative()) { |
| // If the method is native, getMaxLocals is not telling the truth. |
| // maxlocals then equals the size of parameters |
| length = (int) m.getSizeOfParameters(); |
| } |
| |
| StackValueCollection result = new StackValueCollection(length); |
| |
| // Get oopmap describing oops and int for current bci |
| OopMapCacheEntry oopMask = getMethod().getMaskFor(getBCI()); |
| |
| // handle locals |
| for(int i = 0; i < length; i++) { |
| // Find stack location |
| Address addr = addressOfLocalAt(i); |
| |
| // Depending on oop/int put it in the right package |
| StackValue sv; |
| if (oopMask.isOop(i)) { |
| // oop value |
| sv = new StackValue(addr.getOopHandleAt(0), 0); |
| } else { |
| // integer |
| // Fetch a signed integer the size of a stack slot |
| sv = new StackValue(addr.getCIntegerAt(0, VM.getVM().getAddressSize(), false)); |
| } |
| result.add(sv); |
| } |
| |
| return result; |
| } |
| |
| public StackValueCollection getExpressions() { |
| int length = getFrame().getInterpreterFrameExpressionStackSize(); |
| |
| if (getMethod().isNative()) { |
| // If the method is native, there is no expression stack |
| length = 0; |
| } |
| |
| int nofLocals = (int) getMethod().getMaxLocals(); |
| StackValueCollection result = new StackValueCollection(length); |
| |
| // Get oopmap describing oops and int for current bci |
| OopMapCacheEntry oopMask = getMethod().getMaskFor(getBCI()); |
| |
| for(int i = 0; i < length; i++) { |
| // Find stack location |
| Address addr = addressOfExpressionStackAt(i); |
| |
| // Depending on oop/int put it in the right package |
| StackValue sv; |
| if (oopMask.isOop(i + nofLocals)) { |
| // oop value |
| sv = new StackValue(addr.getOopHandleAt(0), 0); |
| } else { |
| // integer |
| // Fetch a signed integer the size of a stack slot |
| sv = new StackValue(addr.getCIntegerAt(0, VM.getVM().getAddressSize(), false)); |
| } |
| result.add(sv); |
| } |
| |
| return result; |
| } |
| |
| /** Returns List<MonitorInfo> */ |
| public List getMonitors() { |
| List result = new ArrayList(5); |
| for (BasicObjectLock current = getFrame().interpreterFrameMonitorEnd(); |
| current.address().lessThan(getFrame().interpreterFrameMonitorBegin().address()); |
| current = getFrame().nextMonitorInInterpreterFrame(current)) { |
| result.add(new MonitorInfo(current.obj(), current.lock(), false, false)); |
| } |
| return result; |
| } |
| |
| /** Test operation */ |
| public boolean isInterpretedFrame() { return true; } |
| |
| /** Package-internal constructor */ |
| InterpretedVFrame(Frame fr, RegisterMap regMap, JavaThread thread) { |
| super(fr, regMap, thread); |
| } |
| |
| /** Accessor for Byte Code Index (NOTE: access to BCP is not allowed |
| in this system; see Frame.java) */ |
| public int getBCI() { |
| return getFrame().getInterpreterFrameBCI(); |
| } |
| |
| /** Setter for Byte Code Index */ |
| // FIXME: not yet implementable |
| // public void setBCI(int bci) { |
| // getFrame().setInterpreterFrameBCI(bci); |
| // } |
| |
| public void verify() { |
| } |
| |
| //-------------------------------------------------------------------------------- |
| // Internals only below this point |
| // |
| |
| private Address addressOfLocalAt(int index) { |
| if (Assert.ASSERTS_ENABLED) { |
| Assert.that(getFrame().isInterpretedFrame(), "frame should be an interpreted frame"); |
| } |
| return fr.addressOfInterpreterFrameLocal(index); |
| } |
| |
| private Address addressOfExpressionStackAt(int index) { |
| return fr.addressOfInterpreterFrameExpressionStackSlot(index); |
| } |
| } |