| /* |
| * Copyright (c) 2000, 2012, 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.code; |
| |
| import java.io.*; |
| import java.util.*; |
| |
| import sun.jvm.hotspot.compiler.*; |
| import sun.jvm.hotspot.debugger.*; |
| import sun.jvm.hotspot.runtime.*; |
| import sun.jvm.hotspot.types.*; |
| import sun.jvm.hotspot.utilities.*; |
| |
| public class CodeBlob extends VMObject { |
| private static AddressField nameField; |
| private static CIntegerField sizeField; |
| private static CIntegerField headerSizeField; |
| private static CIntegerField relocationSizeField; |
| private static CIntegerField contentOffsetField; |
| private static CIntegerField codeOffsetField; |
| private static CIntegerField frameCompleteOffsetField; |
| private static CIntegerField dataOffsetField; |
| private static CIntegerField frameSizeField; |
| private static AddressField oopMapsField; |
| |
| // Only used by server compiler on x86; computed over in SA rather |
| // than relying on computation in target VM |
| private static final int NOT_YET_COMPUTED = -2; |
| private static final int UNDEFINED = -1; |
| private int linkOffset = NOT_YET_COMPUTED; |
| private static int matcherInterpreterFramePointerReg; |
| |
| static { |
| VM.registerVMInitializedObserver(new Observer() { |
| public void update(Observable o, Object data) { |
| initialize(VM.getVM().getTypeDataBase()); |
| } |
| }); |
| } |
| |
| private static void initialize(TypeDataBase db) { |
| Type type = db.lookupType("CodeBlob"); |
| |
| nameField = type.getAddressField("_name"); |
| sizeField = type.getCIntegerField("_size"); |
| headerSizeField = type.getCIntegerField("_header_size"); |
| relocationSizeField = type.getCIntegerField("_relocation_size"); |
| frameCompleteOffsetField = type.getCIntegerField("_frame_complete_offset"); |
| contentOffsetField = type.getCIntegerField("_content_offset"); |
| codeOffsetField = type.getCIntegerField("_code_offset"); |
| dataOffsetField = type.getCIntegerField("_data_offset"); |
| frameSizeField = type.getCIntegerField("_frame_size"); |
| oopMapsField = type.getAddressField("_oop_maps"); |
| |
| if (VM.getVM().isServerCompiler()) { |
| matcherInterpreterFramePointerReg = |
| db.lookupIntConstant("Matcher::interpreter_frame_pointer_reg").intValue(); |
| } |
| } |
| |
| public CodeBlob(Address addr) { |
| super(addr); |
| } |
| |
| // Typing |
| public boolean isBufferBlob() { return false; } |
| public boolean isNMethod() { return false; } |
| public boolean isRuntimeStub() { return false; } |
| public boolean isDeoptimizationStub() { return false; } |
| public boolean isUncommonTrapStub() { return false; } |
| public boolean isExceptionStub() { return false; } |
| public boolean isSafepointStub() { return false; } |
| public boolean isAdapterBlob() { return false; } |
| |
| // Fine grain nmethod support: isNmethod() == isJavaMethod() || isNativeMethod() || isOSRMethod() |
| public boolean isJavaMethod() { return false; } |
| public boolean isNativeMethod() { return false; } |
| /** On-Stack Replacement method */ |
| public boolean isOSRMethod() { return false; } |
| |
| public NMethod asNMethodOrNull() { |
| if (isNMethod()) return (NMethod)this; |
| return null; |
| } |
| |
| // Boundaries |
| public Address headerBegin() { |
| return addr; |
| } |
| |
| public Address headerEnd() { |
| return addr.addOffsetTo(headerSizeField.getValue(addr)); |
| } |
| |
| // FIXME: add RelocInfo |
| // public RelocInfo relocationBegin(); |
| // public RelocInfo relocationEnd(); |
| |
| public Address contentBegin() { |
| return headerBegin().addOffsetTo(contentOffsetField.getValue(addr)); |
| } |
| |
| public Address contentEnd() { |
| return headerBegin().addOffsetTo(dataOffsetField.getValue(addr)); |
| } |
| |
| public Address codeBegin() { |
| return headerBegin().addOffsetTo(contentOffsetField.getValue(addr)); |
| } |
| |
| public Address codeEnd() { |
| return headerBegin().addOffsetTo(dataOffsetField.getValue(addr)); |
| } |
| |
| public Address dataBegin() { |
| return headerBegin().addOffsetTo(dataOffsetField.getValue(addr)); |
| } |
| |
| public Address dataEnd() { |
| return headerBegin().addOffsetTo(sizeField.getValue(addr)); |
| } |
| |
| // Offsets |
| public int getRelocationOffset() { return (int) headerSizeField .getValue(addr); } |
| public int getContentOffset() { return (int) contentOffsetField.getValue(addr); } |
| public int getCodeOffset() { return (int) codeOffsetField .getValue(addr); } |
| public int getDataOffset() { return (int) dataOffsetField .getValue(addr); } |
| |
| // Sizes |
| public int getSize() { return (int) sizeField .getValue(addr); } |
| public int getHeaderSize() { return (int) headerSizeField.getValue(addr); } |
| // FIXME: add getRelocationSize() |
| public int getContentSize() { return (int) contentEnd().minus(contentBegin()); } |
| public int getCodeSize() { return (int) codeEnd() .minus(codeBegin()); } |
| public int getDataSize() { return (int) dataEnd() .minus(dataBegin()); } |
| |
| // Containment |
| public boolean blobContains(Address addr) { return headerBegin() .lessThanOrEqual(addr) && dataEnd() .greaterThan(addr); } |
| // FIXME: add relocationContains |
| public boolean contentContains(Address addr) { return contentBegin().lessThanOrEqual(addr) && contentEnd().greaterThan(addr); } |
| public boolean codeContains(Address addr) { return codeBegin() .lessThanOrEqual(addr) && codeEnd() .greaterThan(addr); } |
| public boolean dataContains(Address addr) { return dataBegin() .lessThanOrEqual(addr) && dataEnd() .greaterThan(addr); } |
| public boolean contains(Address addr) { return contentContains(addr); } |
| public boolean isFrameCompleteAt(Address a) { return codeContains(a) && a.minus(codeBegin()) >= frameCompleteOffsetField.getValue(addr); } |
| |
| // Reclamation support (really only used by the nmethods, but in order to get asserts to work |
| // in the CodeCache they are defined virtual here) |
| public boolean isZombie() { return false; } |
| public boolean isLockedByVM() { return false; } |
| |
| /** OopMap for frame; can return null if none available */ |
| public OopMapSet getOopMaps() { |
| Address oopMapsAddr = oopMapsField.getValue(addr); |
| if (oopMapsAddr == null) { |
| return null; |
| } |
| return new OopMapSet(oopMapsAddr); |
| } |
| // FIXME: not yet implementable |
| // void set_oop_maps(OopMapSet* p); |
| |
| public OopMap getOopMapForReturnAddress(Address returnAddress, boolean debugging) { |
| Address pc = returnAddress; |
| if (Assert.ASSERTS_ENABLED) { |
| Assert.that(getOopMaps() != null, "nope"); |
| } |
| return getOopMaps().findMapAtOffset(pc.minus(codeBegin()), debugging); |
| } |
| |
| // virtual void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, void f(oop*)) { ShouldNotReachHere(); } |
| // FIXME; |
| |
| /** NOTE: this returns a size in BYTES in this system! */ |
| public long getFrameSize() { |
| return VM.getVM().getAddressSize() * frameSizeField.getValue(addr); |
| } |
| |
| // Returns true, if the next frame is responsible for GC'ing oops passed as arguments |
| public boolean callerMustGCArguments() { return false; } |
| |
| public String getName() { |
| return CStringUtilities.getString(nameField.getValue(addr)); |
| } |
| |
| // FIXME: NOT FINISHED |
| |
| // FIXME: add more accessors |
| |
| public void print() { |
| printOn(System.out); |
| } |
| |
| public void printOn(PrintStream tty) { |
| tty.print(getName()); |
| printComponentsOn(tty); |
| } |
| |
| protected void printComponentsOn(PrintStream tty) { |
| tty.println(" content: [" + contentBegin() + ", " + contentEnd() + "), " + |
| " code: [" + codeBegin() + ", " + codeEnd() + "), " + |
| " data: [" + dataBegin() + ", " + dataEnd() + "), " + |
| " frame size: " + getFrameSize()); |
| } |
| } |