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 #ifndef OS_WINDOWS_VM_DECODER_WINDOWS_HPP
  26 #define OS_WINDOWS_VM_DECIDER_WINDOWS_HPP
  27   
  28 #include <windows.h>
  29 #include <imagehlp.h>
  30 
  31 #include "utilities/decoder.hpp"
  32 
  33 // functions needed for decoding symbols
  34 typedef DWORD (WINAPI *pfn_SymSetOptions)(DWORD);
  35 typedef BOOL  (WINAPI *pfn_SymInitialize)(HANDLE, PCTSTR, BOOL);
  36 typedef BOOL  (WINAPI *pfn_SymGetSymFromAddr64)(HANDLE, DWORD64, PDWORD64, PIMAGEHLP_SYMBOL64);
  37 typedef DWORD (WINAPI *pfn_UndecorateSymbolName)(const char*, char*, DWORD, DWORD);
  38 
  39 class WindowsDecoder: public NullDecoder {
  40 
  41 public:
  42   WindowsDecoder();
  43   ~WindowsDecoder() { uninitialize(); };
  44 
  45   bool can_decode_C_frame_in_vm() const;
  46   bool demangle(const char* symbol, char *buf, int buflen);
  47   bool decode(address addr, char *buf, int buflen, int* offset, const char* modulepath = NULL);
  48 
  49 private:
  50   void initialize();
  51   void uninitialize();
  52 
  53 private:
  54   HMODULE                   _dbghelp_handle;
  55   bool                      _can_decode_in_vm;
  56   pfn_SymGetSymFromAddr64   _pfnSymGetSymFromAddr64;
  57   pfn_UndecorateSymbolName  _pfnUndecorateSymbolName;
  58 };
  59 
  60 #endif // OS_WINDOWS_VM_DECODER_WINDOWS_HPP
  61