1 /*
   2  * Copyright (c) 2003, 2006, 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.debugger.bsd;
  26 
  27 import java.io.*;
  28 import java.util.*;
  29 import sun.jvm.hotspot.debugger.*;
  30 import sun.jvm.hotspot.debugger.cdbg.*;
  31 import sun.jvm.hotspot.debugger.x86.*;
  32 import sun.jvm.hotspot.debugger.amd64.*;
  33 import sun.jvm.hotspot.debugger.bsd.x86.*;
  34 import sun.jvm.hotspot.debugger.bsd.amd64.*;
  35 import sun.jvm.hotspot.utilities.*;
  36 
  37 class BsdCDebugger implements CDebugger {
  38   private BsdDebugger dbg;
  39 
  40   BsdCDebugger(BsdDebugger dbg) {
  41     this.dbg = dbg;
  42   }
  43 
  44   public List getThreadList() throws DebuggerException {
  45     return dbg.getThreadList();
  46   }
  47 
  48   public List/*<LoadObject>*/ getLoadObjectList() throws DebuggerException {
  49     return dbg.getLoadObjectList();
  50   }
  51 
  52   public LoadObject loadObjectContainingPC(Address pc) throws DebuggerException {
  53     if (pc == null) {
  54       return null;
  55     }
  56     List objs = getLoadObjectList();
  57     Object[] arr = objs.toArray();
  58     // load objects are sorted by base address, do binary search
  59     int mid  = -1;
  60     int low  = 0;
  61     int high = arr.length - 1;
  62 
  63     while (low <= high) {
  64        mid = (low + high) >> 1;
  65        LoadObject midVal = (LoadObject) arr[mid];
  66        long cmp = pc.minus(midVal.getBase());
  67        if (cmp < 0) {
  68           high = mid - 1;
  69        } else if (cmp > 0) {
  70           long size = midVal.getSize();
  71           if (cmp >= size) {
  72              low = mid + 1;
  73           } else {
  74              return (LoadObject) arr[mid];
  75           }
  76        } else { // match found
  77           return (LoadObject) arr[mid];
  78        }
  79     }
  80     // no match found.
  81     return null;
  82   }
  83 
  84   public CFrame topFrameForThread(ThreadProxy thread) throws DebuggerException {
  85     String cpu = dbg.getCPU();
  86     if (cpu.equals("x86")) {
  87        X86ThreadContext context = (X86ThreadContext) thread.getContext();
  88        Address ebp = context.getRegisterAsAddress(X86ThreadContext.EBP);
  89        if (ebp == null) return null;
  90        Address pc  = context.getRegisterAsAddress(X86ThreadContext.EIP);
  91        if (pc == null) return null;
  92        return new BsdX86CFrame(dbg, ebp, pc);
  93     } else if (cpu.equals("amd64")) {
  94        AMD64ThreadContext context = (AMD64ThreadContext) thread.getContext();
  95        Address rbp = context.getRegisterAsAddress(AMD64ThreadContext.RBP);
  96        if (rbp == null) return null;
  97        Address pc  = context.getRegisterAsAddress(AMD64ThreadContext.RIP);
  98        if (pc == null) return null;
  99        return new BsdAMD64CFrame(dbg, rbp, pc);
 100     } else {
 101        throw new DebuggerException(cpu + " is not yet supported");
 102     }
 103   }
 104 
 105   public String getNameOfFile(String fileName) {
 106     return new File(fileName).getName();
 107   }
 108 
 109   public ProcessControl getProcessControl() throws DebuggerException {
 110     // FIXME: after stabs parser
 111     return null;
 112   }
 113 
 114   public boolean canDemangle() {
 115     return false;
 116   }
 117 
 118   public String demangle(String sym) {
 119     throw new UnsupportedOperationException();
 120   }
 121 }