/*+
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 * Copyright (c) 2011, 2015, Oracle and/or its affiliates. All rights reserved.+
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.+
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 *+
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 * This code is free software; you can redistribute it and/or modify it+
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 * under the terms of the GNU General Public License version 2 only, as+
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 * published by the Free Software Foundation.+
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 *+
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 * This code is distributed in the hope that it will be useful, but WITHOUT+
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or+
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License+
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 * version 2 for more details (a copy is included in the LICENSE file that+
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 * accompanied this code).+
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 *+
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 * You should have received a copy of the GNU General Public License version+
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 * 2 along with this work; if not, write to the Free Software Foundation,+
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.+
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 *+
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA+
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 * or visit www.oracle.com if you need additional information or have any+
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 * questions.+
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 *+
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 */+
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+
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#ifndef OS_WINDOWS_VM_DECODER_WINDOWS_HPP+
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#define OS_WINDOWS_VM_DECIDER_WINDOWS_HPP+
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+
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#include <windows.h>+
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#include <imagehlp.h>+
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+
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#include "utilities/decoder.hpp"+
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+
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// functions needed for decoding symbols+
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typedef DWORD (WINAPI *pfn_SymSetOptions)(DWORD);+
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typedef BOOL  (WINAPI *pfn_SymInitialize)(HANDLE, PCTSTR, BOOL);+
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typedef BOOL  (WINAPI *pfn_SymGetSymFromAddr64)(HANDLE, DWORD64, PDWORD64, PIMAGEHLP_SYMBOL64);+
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typedef DWORD (WINAPI *pfn_UndecorateSymbolName)(const char*, char*, DWORD, DWORD);+
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typedef BOOL  (WINAPI *pfn_SymSetSearchPath)(HANDLE, PCTSTR);+
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typedef BOOL  (WINAPI *pfn_SymGetSearchPath)(HANDLE, PTSTR, int);+
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+
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#ifdef AMD64+
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typedef BOOL  (WINAPI *pfn_StackWalk64)(DWORD MachineType,+
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                                        HANDLE hProcess,+
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                                        HANDLE hThread,+
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                                        LPSTACKFRAME64 StackFrame,+
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                                        PVOID ContextRecord,+
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                                        PREAD_PROCESS_MEMORY_ROUTINE64 ReadMemoryRoutine,+
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                                        PFUNCTION_TABLE_ACCESS_ROUTINE64 FunctionTableAccessRoutine,+
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                                        PGET_MODULE_BASE_ROUTINE64 GetModuleBaseRoutine,+
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                                        PTRANSLATE_ADDRESS_ROUTINE64 TranslateAddress);+
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typedef PVOID (WINAPI *pfn_SymFunctionTableAccess64)(HANDLE hProcess, DWORD64 AddrBase);+
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typedef DWORD64 (WINAPI *pfn_SymGetModuleBase64)(HANDLE hProcess, DWORD64 dwAddr);+
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#endif+
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+
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class WindowsDecoder : public AbstractDecoder {+
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+
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public:+
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  WindowsDecoder();+
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  ~WindowsDecoder() { uninitialize(); };+
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+
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  bool can_decode_C_frame_in_vm() const;+
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  bool demangle(const char* symbol, char *buf, int buflen);+
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  bool decode(address addr, char *buf, int buflen, int* offset, const char* modulepath, bool demangle);+
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  bool decode(address addr, char *buf, int buflen, int* offset, const void* base) {+
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    ShouldNotReachHere();+
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    return false;+
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  }+
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+
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private:+
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  void initialize();+
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  void uninitialize();+
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+
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private:+
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  HMODULE                   _dbghelp_handle;+
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  bool                      _can_decode_in_vm;+
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  pfn_SymGetSymFromAddr64   _pfnSymGetSymFromAddr64;+
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  pfn_UndecorateSymbolName  _pfnUndecorateSymbolName;+
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#ifdef AMD64+
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  pfn_StackWalk64              _pfnStackWalk64;+
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  pfn_SymFunctionTableAccess64 _pfnSymFunctionTableAccess64;+
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  pfn_SymGetModuleBase64       _pfnSymGetModuleBase64;+
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+
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  friend class WindowsDbgHelp;+
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#endif+
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};+
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+
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#ifdef AMD64+
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// TODO: refactor and move the handling of dbghelp.dll outside of Decoder+
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class WindowsDbgHelp : public Decoder {+
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public:+
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  static BOOL StackWalk64(DWORD MachineType,+
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                          HANDLE hProcess,+
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                          HANDLE hThread,+
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                          LPSTACKFRAME64 StackFrame,+
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                          PVOID ContextRecord,+
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                          PREAD_PROCESS_MEMORY_ROUTINE64 ReadMemoryRoutine,+
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                          PFUNCTION_TABLE_ACCESS_ROUTINE64 FunctionTableAccessRoutine,+
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                          PGET_MODULE_BASE_ROUTINE64 GetModuleBaseRoutine,+
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                          PTRANSLATE_ADDRESS_ROUTINE64 TranslateAddress);+
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  static PVOID SymFunctionTableAccess64(HANDLE hProcess, DWORD64 AddrBase);+
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+
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  static pfn_SymFunctionTableAccess64 pfnSymFunctionTableAccess64();+
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  static pfn_SymGetModuleBase64       pfnSymGetModuleBase64();+
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};+
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#endif+
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+
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#endif // OS_WINDOWS_VM_DECODER_WINDOWS_HPP+
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+
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