1 /* 2 * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 package sun.jvm.hotspot.runtime.sparc; 26 27 import java.util.*; 28 import sun.jvm.hotspot.asm.sparc.SPARCRegister; 29 import sun.jvm.hotspot.asm.sparc.SPARCRegisters; 30 import sun.jvm.hotspot.debugger.*; 31 import sun.jvm.hotspot.runtime.*; 32 import sun.jvm.hotspot.types.*; 33 34 public class SPARCRicochetFrame { 35 static { 36 VM.registerVMInitializedObserver(new Observer() { 37 public void update(Observable o, Object data) { 38 initialize(VM.getVM().getTypeDataBase()); 39 } 40 }); 41 } 42 43 private SPARCFrame frame; 44 45 private static void initialize(TypeDataBase db) { 46 // Type type = db.lookupType("MethodHandles::RicochetFrame"); 47 48 } 49 50 static SPARCRicochetFrame fromFrame(SPARCFrame f) { 51 return new SPARCRicochetFrame(f); 52 } 53 54 private SPARCRicochetFrame(SPARCFrame f) { 55 frame = f; 56 } 57 58 private Address registerValue(SPARCRegister reg) { 59 return frame.getSP().addOffsetTo(reg.spOffsetInSavedWindow()).getAddressAt(0); 60 } 61 62 public Address savedArgsBase() { 63 return registerValue(SPARCRegisters.L4); 64 } 65 public Address exactSenderSP() { 66 return registerValue(SPARCRegisters.I5); 67 } 68 public Address senderLink() { 69 return frame.getSenderSP(); 70 } 71 public Address senderPC() { 72 return frame.getSenderPC(); 73 } 74 public Address extendedSenderSP() { 75 return savedArgsBase(); 76 } 77 }