public static unsafe PyFrameObject TryCreate(DkmStackWalkFrame frame) {
var process = frame.Process;
var PyEval_EvalFrameEx = process.CreateNativeInstructionAddress(process.GetPythonRuntimeInfo().DLLs.Python.GetFunctionAddress("PyEval_EvalFrameEx"));
if (frame.InstructionAddress == null) {
return null;
}
if (frame.RuntimeInstance.Id.RuntimeType != Guids.PythonRuntimeTypeGuid && !frame.InstructionAddress.IsInSameFunction(PyEval_EvalFrameEx)) {
return null;
}
var cppLanguage = DkmLanguage.Create("C++", new DkmCompilerId(Guids.MicrosoftVendorGuid, Guids.CppLanguageGuid));
var inspectionSession = DkmInspectionSession.Create(process, null);
var inspectionContext = DkmInspectionContext.Create(inspectionSession, process.GetNativeRuntimeInstance(), frame.Thread, 0,
DkmEvaluationFlags.TreatAsExpression | DkmEvaluationFlags.NoSideEffects, DkmFuncEvalFlags.None, 10, cppLanguage, null);
CppExpressionEvaluator cppEval;
try {
cppEval = new CppExpressionEvaluator(inspectionContext, frame);
} catch (ArgumentException) {
Debug.Fail("Failed to create C++ expression evaluator while obtaining PyFrameObject from a native frame.");
return null;
}
ulong framePtr;
try {
framePtr = cppEval.EvaluateUInt64("f");
} catch (CppEvaluationException) {
Debug.Fail("Failed to evaluate the 'f' parameter to PyEval_EvalFrameEx while obtaining PyFrameObject from a native frame.");
return null;
}
return new PyFrameObject(frame.Process, framePtr);
}
public static unsafe PyFrameObject TryCreate(DkmStackWalkFrame frame)
{
var process = frame.Process;
if (frame.InstructionAddress == null)
{
return(null);
}
if (frame.RuntimeInstance.Id.RuntimeType != Guids.PythonRuntimeTypeGuid && !IsInEvalFrame(frame))
{
return(null);
}
var cppLanguage = DkmLanguage.Create("C++", new DkmCompilerId(Guids.MicrosoftVendorGuid, Guids.CppLanguageGuid));
var inspectionSession = DkmInspectionSession.Create(process, null);
var inspectionContext = DkmInspectionContext.Create(inspectionSession, process.GetNativeRuntimeInstance(), frame.Thread, 0,
DkmEvaluationFlags.TreatAsExpression | DkmEvaluationFlags.NoSideEffects, DkmFuncEvalFlags.None, 10, cppLanguage, null);
CppExpressionEvaluator cppEval;
try
{
cppEval = new CppExpressionEvaluator(inspectionContext, frame);
}
catch (ArgumentException)
{
Debug.Fail("Failed to create C++ expression evaluator while obtaining PyFrameObject from a native frame.");
return(null);
}
ulong framePtr;
try
{
framePtr = cppEval.EvaluateUInt64("f");
}
catch (CppEvaluationException)
{
Debug.Fail("Failed to evaluate the 'f' parameter to PyEval_EvalFrameEx while obtaining PyFrameObject from a native frame.");
return(null);
}
return(new PyFrameObject(frame.Process, framePtr));
}
