public void LoadModule(string name, ulong base_address, ulong size)
{
if (0 == DbgHelpNative.SymLoadModule64(m_Handle, IntPtr.Zero, name, null, base_address, (uint)size))
{
throw new Win32Exception(Marshal.GetLastWin32Error(), "Failed to load " + name);
}
}
private void Dispose(bool disposing)
{
if (m_Handle.ToInt64() == 0)
{
return;
}
DbgHelpNative.SymCleanup(m_Handle);
m_Handle = IntPtr.Zero;
}
public bool LookupSymbol(ulong address, out SymbolInfo sym)
{
sym.FileName = "";
sym.LineNumber = 0;
sym.Symbol = "";
sym.Address = address;
DbgHelpNative.SYMBOL_INFO data = new DbgHelpNative.SYMBOL_INFO();
data.SizeOfStruct = (uint)Marshal.SizeOf(data) - 1024;
data.MaxNameLen = 1024;
ulong displacement;
if (DbgHelpNative.SymFromAddr(m_Handle, address, out displacement, ref data))
{
sym.Symbol = data.Name;
}
else
{
return(false);
}
DbgHelpNative.IMAGEHLP_LINE64 line = new DbgHelpNative.IMAGEHLP_LINE64();
line.SizeOfStruct = (uint)Marshal.SizeOf(line);
uint disp32;
if (DbgHelpNative.SymGetLineFromAddr64(m_Handle, address, out disp32, ref line))
{
StringBuilder fn = new StringBuilder(128);
for (int i = 0; ; ++i)
{
byte b = Marshal.ReadByte(IntPtr.Add(line.FileName, i));
if (0 == b)
{
break;
}
fn.Append((char)b);
}
sym.FileName = fn.ToString();
sym.LineNumber = (int)line.LineNumber;
}
else
{
sym.FileName = "(no source)";
}
return(true);
}
public DbgHelp(ICollection <string> symbol_search_paths)
{
IntPtr handle = IntPtr.Add(IntPtr.Zero, 0x7ffffffe);
DbgHelpNative.SetErrorMode(DbgHelpNative.SetErrorFlags.SEM_FAILCRITICALERRORS | DbgHelpNative.SetErrorFlags.SEM_NOOPENFILEERRORBOX);
DbgHelpNative.SymSetOptions(DbgHelpNative.Options.SYMOPT_DEFERRED_LOADS | DbgHelpNative.Options.SYMOPT_DEBUG);
string search_paths = null;
if (symbol_search_paths.Count > 0)
{
var path = new StringBuilder(1024);
foreach (var sym in symbol_search_paths)
{
if (path.Length > 0)
{
path.Append(";");
}
path.Append(sym);
}
search_paths = path.ToString();
}
if (!DbgHelpNative.SymInitialize(handle, search_paths, false))
{
throw new ApplicationException("Failed to initialize DbgHelp library");
}
m_CallbackGc = new DbgHelpNative.SymRegisterCallbackProc64(OnCallback);
DbgHelpNative.SymRegisterCallback64(handle, m_CallbackGc, 0);
m_Handle = handle;
}
private static bool OnCallback(IntPtr hProcess, DbgHelpNative.DebugAction action_code, ulong callback_data, ulong user_context)
{
switch (action_code)
{
case DbgHelpNative.DebugAction.CBA_DEBUG_INFO:
Debug.Write(Marshal.PtrToStringAnsi((IntPtr) callback_data));
return true;
default:
return false;
}
}
