private static Dictionary <string, IntPtr> ParseSymbols(string pdbPath, IntPtr moduleAddress) { var symbols = new Dictionary <string, IntPtr>(); // Initialise a symbol handler for the local process using var localProcess = Process.GetCurrentProcess(); if (!Dbghelp.SymInitialize(localProcess.SafeHandle, IntPtr.Zero, false)) { throw new Win32Exception($"Failed to call SymInitialize with error code {Marshal.GetLastWin32Error()}"); } // Load the symbol table for the PDB var pdbPathBuffer = Encoding.Default.GetBytes(pdbPath); var symbolTableBaseAddress = Dbghelp.SymLoadModuleEx(localProcess.SafeHandle, IntPtr.Zero, ref pdbPathBuffer[0], IntPtr.Zero, moduleAddress, (int)new FileInfo(pdbPath).Length, IntPtr.Zero, 0); if (symbolTableBaseAddress == IntPtr.Zero) { throw new Win32Exception($"Failed to call SymLoadModuleEx with error code {Marshal.GetLastWin32Error()}"); } // Initialise the callback used during the SymEnumSymbols call bool Callback(ref SymbolInfo symbolInfo, int symbolSize, IntPtr userContext) { var symbolNameBuffer = new byte[symbolInfo.NameLen]; Unsafe.CopyBlockUnaligned(ref symbolNameBuffer[0], ref symbolInfo.Name, (uint)symbolNameBuffer.Length); symbols.TryAdd(Encoding.Default.GetString(symbolNameBuffer), (IntPtr)symbolInfo.Address); return(true); } var callbackDelegate = new Prototypes.EnumerateSymbolsCallback(Callback); // Enumerate the PDB symbols if (!Dbghelp.SymEnumSymbols(localProcess.SafeHandle, symbolTableBaseAddress, IntPtr.Zero, callbackDelegate, IntPtr.Zero)) { throw new Win32Exception($"Failed to call SymEnumSymbols with error code {Marshal.GetLastWin32Error()}"); } if (!Dbghelp.SymUnloadModule(localProcess.SafeHandle, symbolTableBaseAddress)) { throw new Win32Exception($"Failed to call SymUnloadModule with error code {Marshal.GetLastWin32Error()}"); } return(symbols); }
private Dictionary <string, IntPtr> ParseSymbols(string pdbPath, IntPtr moduleAddress) { // Initialise a symbol handler for the local process var localProcessHandle = Process.GetCurrentProcess().SafeHandle; if (!Dbghelp.SymInitialize(localProcessHandle, IntPtr.Zero, false)) { throw new PInvokeException("Failed to call SymInitialize"); } // Load the symbol table for the PDB var pdbPathBuffer = Marshal.StringToHGlobalAnsi(pdbPath); var symbolTableBaseAddress = Dbghelp.SymLoadModuleEx(localProcessHandle, IntPtr.Zero, pdbPathBuffer, IntPtr.Zero, moduleAddress, int.MaxValue, IntPtr.Zero, 0); if (symbolTableBaseAddress == IntPtr.Zero) { throw new PInvokeException("Failed to call SymLoadModuleEx"); } // Initialise the callback used during the SymEnumSymbols call var symbols = new Dictionary <string, IntPtr>(); bool Callback(IntPtr symbolInfo, int symbolSize, IntPtr userContext) { symbols.TryAdd(Marshal.PtrToStringAnsi(symbolInfo + Marshal.SizeOf <SymbolInfo>()), (IntPtr)Marshal.PtrToStructure <SymbolInfo>(symbolInfo).Address); return(true); } var callbackDelegate = new Prototypes.EnumerateSymbolsCallback(Callback); var callbackPointer = Marshal.GetFunctionPointerForDelegate(callbackDelegate); // Enumerate the PDB symbols if (!Dbghelp.SymEnumSymbols(localProcessHandle, symbolTableBaseAddress, IntPtr.Zero, callbackPointer, IntPtr.Zero)) { throw new PInvokeException("Failed to call SymEnumSymbols"); } Dbghelp.SymUnloadModule64(localProcessHandle, symbolTableBaseAddress); return(symbols); }