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comparison agent/src/share/classes/sun/jvm/hotspot/debugger/linux/amd64/LinuxAMD64CFrame.java @ 6163:b87e5a681416

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6310967: SA: jstack -m produce failures in output Summary: While looking for the sender frame check that the frame pointer should not be less than the stack pointer. Reviewed-by: dholmes, sla
author poonam
date Thu, 14 Jun 2012 02:12:46 -0700
parents c18cbe5936b8
children 651919d134f7
comparison
equal deleted inserted replaced
6129:4d399f013e5a 6163:b87e5a681416
1 /* 1 /*
2 * Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 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 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
23 */ 23 */
24 24
25 package sun.jvm.hotspot.debugger.linux.amd64; 25 package sun.jvm.hotspot.debugger.linux.amd64;
26 26
27 import sun.jvm.hotspot.debugger.*; 27 import sun.jvm.hotspot.debugger.*;
28 import sun.jvm.hotspot.debugger.amd64.*;
28 import sun.jvm.hotspot.debugger.linux.*; 29 import sun.jvm.hotspot.debugger.linux.*;
29 import sun.jvm.hotspot.debugger.cdbg.*; 30 import sun.jvm.hotspot.debugger.cdbg.*;
30 import sun.jvm.hotspot.debugger.cdbg.basic.*; 31 import sun.jvm.hotspot.debugger.cdbg.basic.*;
31 32
32 final public class LinuxAMD64CFrame extends BasicCFrame { 33 final public class LinuxAMD64CFrame extends BasicCFrame {
49 50
50 public Address localVariableBase() { 51 public Address localVariableBase() {
51 return rbp; 52 return rbp;
52 } 53 }
53 54
54 public CFrame sender() { 55 public CFrame sender(ThreadProxy thread) {
55 if (rbp == null) { 56 AMD64ThreadContext context = (AMD64ThreadContext) thread.getContext();
57 Address rsp = context.getRegisterAsAddress(AMD64ThreadContext.RSP);
58
59 if ( (rbp == null) || rbp.lessThan(rsp) ) {
56 return null; 60 return null;
57 } 61 }
58 62
59 Address nextRBP = rbp.getAddressAt( 0 * ADDRESS_SIZE); 63 Address nextRBP = rbp.getAddressAt( 0 * ADDRESS_SIZE);
60 if (nextRBP == null) { 64 if (nextRBP == null) {