1 /* 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. 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.linux; 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.sparc.*; 34 import sun.jvm.hotspot.debugger.linux.x86.*; 35 import sun.jvm.hotspot.debugger.linux.amd64.*; 36 import sun.jvm.hotspot.debugger.linux.sparc.*; 37 import sun.jvm.hotspot.utilities.*; 38 39 class LinuxCDebugger implements CDebugger { 40 private LinuxDebugger dbg; 41 42 LinuxCDebugger(LinuxDebugger dbg) { 43 this.dbg = dbg; 44 } 45 46 public List getThreadList() throws DebuggerException { 47 return dbg.getThreadList(); 48 } 49 50 public List/*<LoadObject>*/ getLoadObjectList() throws DebuggerException { 51 return dbg.getLoadObjectList(); 52 } 53 54 public LoadObject loadObjectContainingPC(Address pc) throws DebuggerException { 55 if (pc == null) { 56 return null; 57 } 58 59 /* Typically we have about ten loaded objects here. So no reason to do 60 sort/binary search here. Linear search gives us acceptable performance.*/ 61 62 List objs = getLoadObjectList(); 63 64 for (int i = 0; i < objs.size(); i++) { 65 LoadObject ob = (LoadObject) objs.get(i); 66 Address base = ob.getBase(); 67 long size = ob.getSize(); 68 if ( pc.greaterThanOrEqual(base) && pc.lessThan(base.addOffsetTo(size))) { 69 return ob; 70 } 71 } 72 73 return null; 74 } 75 76 public CFrame topFrameForThread(ThreadProxy thread) throws DebuggerException { 77 String cpu = dbg.getCPU(); 78 if (cpu.equals("x86")) { 79 X86ThreadContext context = (X86ThreadContext) thread.getContext(); 80 Address ebp = context.getRegisterAsAddress(X86ThreadContext.EBP); 81 if (ebp == null) return null; 82 Address pc = context.getRegisterAsAddress(X86ThreadContext.EIP); 83 if (pc == null) return null; 84 return new LinuxX86CFrame(dbg, ebp, pc); 85 } else if (cpu.equals("amd64")) { 86 AMD64ThreadContext context = (AMD64ThreadContext) thread.getContext(); 87 Address rbp = context.getRegisterAsAddress(AMD64ThreadContext.RBP); 88 if (rbp == null) return null; 89 Address pc = context.getRegisterAsAddress(AMD64ThreadContext.RIP); 90 if (pc == null) return null; 91 return new LinuxAMD64CFrame(dbg, rbp, pc); 92 } else if (cpu.equals("sparc")) { 93 SPARCThreadContext context = (SPARCThreadContext) thread.getContext(); 94 Address sp = context.getRegisterAsAddress(SPARCThreadContext.R_SP); 95 if (sp == null) return null; 96 Address pc = context.getRegisterAsAddress(SPARCThreadContext.R_O7); 97 if (pc == null) return null; 98 return new LinuxSPARCCFrame(dbg, sp, pc, LinuxDebuggerLocal.getAddressSize()); 99 } else { 100 // Runtime exception thrown by LinuxThreadContextFactory if unknown cpu 101 ThreadContext context = (ThreadContext) thread.getContext(); 102 return context.getTopFrame(dbg); 103 } 104 } 105 106 public String getNameOfFile(String fileName) { 107 return new File(fileName).getName(); 108 } 109 110 public ProcessControl getProcessControl() throws DebuggerException { 111 // FIXME: after stabs parser 112 return null; 113 } 114 115 public boolean canDemangle() { 116 return false; 117 } 118 119 public String demangle(String sym) { 120 throw new UnsupportedOperationException(); 121 } 122 }