/*

 * Copyright (c) 2011, 2012, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 *

 */

#ifndef OS_WINDOWS_VM_DECODER_WINDOWS_HPP

#define OS_WINDOWS_VM_DECIDER_WINDOWS_HPP

#include <windows.h>

#include <imagehlp.h>

#include "utilities/decoder.hpp"

// functions needed for decoding symbols

typedef DWORD (WINAPI *pfn_SymSetOptions)(DWORD);

typedef BOOL  (WINAPI *pfn_SymInitialize)(HANDLE, PCTSTR, BOOL);

typedef BOOL  (WINAPI *pfn_SymGetSymFromAddr64)(HANDLE, DWORD64, PDWORD64, PIMAGEHLP_SYMBOL64);

typedef DWORD (WINAPI *pfn_UndecorateSymbolName)(const char*, char*, DWORD, DWORD);

class WindowsDecoder : public AbstractDecoder {

public:

  WindowsDecoder();

  ~WindowsDecoder() { uninitialize(); };

  bool can_decode_C_frame_in_vm() const;

  bool demangle(const char* symbol, char *buf, int buflen);

  bool decode(address addr, char *buf, int buflen, int* offset, const char* modulepath = NULL);

  bool decode(address addr, char *buf, int buflen, int* offset, const void* base) {

    ShouldNotReachHere();

    return false;

  }

private:

  void initialize();

  void uninitialize();

private:

  HMODULE                   _dbghelp_handle;

  bool                      _can_decode_in_vm;

  pfn_SymGetSymFromAddr64   _pfnSymGetSymFromAddr64;

  pfn_UndecorateSymbolName  _pfnUndecorateSymbolName;

};

#endif // OS_WINDOWS_VM_DECODER_WINDOWS_HPP