void IFunctionTracer.OnEntryBreakpointHit(DkmRuntimeBreakpoint bp, DkmThread thread, bool hasException)
{
// The function was just entered. Install the exit breakpoint on the calling thread at the
// return address, and notify any listeners.
DkmStackWalkFrame frame = thread.GetTopStackWalkFrame(bp.RuntimeInstance);
bool suppressExitBreakpoint = false;
if (OnFunctionEntered != null)
{
OnFunctionEntered(frame, frameAnalyzer, out suppressExitBreakpoint);
}
if (!suppressExitBreakpoint)
{
ulong ret = frame.VscxGetReturnAddress();
DkmInstructionAddress retAddr = thread.Process.CreateNativeInstructionAddress(ret);
DkmRuntimeInstructionBreakpoint exitBp = DkmRuntimeInstructionBreakpoint.Create(
Guids.Source.FunctionTraceExit, thread, retAddr, false, null);
// Capture the value of every argument now, since when the exit breakpoint gets hit, the
// target function will have already returned and its frame will be cleaned up.
exitBp.SetDataItem(DkmDataCreationDisposition.CreateAlways,
new FunctionTraceEntryDataItem {
EntryArgumentValues = frameAnalyzer.GetAllArgumentValues(frame)
});
exitBp.SetDataItem(DkmDataCreationDisposition.CreateAlways,
new FunctionTraceDataItem {
Tracer = this
});
exitBp.Enable();
}
}
internal static DkmEvaluationResult GetLuaFunctionChildAtIndex(DkmInspectionContext inspectionContext, DkmStackWalkFrame stackFrame, string fullName, LuaClosureData value, int index)
{
var process = stackFrame.Process;
var processData = DebugHelpers.GetOrCreateDataItem <LuaLocalProcessData>(process);
if (index == 0)
{
if (value == null)
{
return(DkmFailedEvaluationResult.Create(inspectionContext, stackFrame, "[function]", $"{fullName}.!function", "null", DkmEvaluationResultFlags.Invalid, null));
}
var functionData = value.ReadFunction(process);
if (functionData == null)
{
return(DkmFailedEvaluationResult.Create(inspectionContext, stackFrame, "[function]", $"{fullName}.!function", "[internal error: failed to read Proto]", DkmEvaluationResultFlags.Invalid, null));
}
string source = functionData.ReadSource(process);
if (source == null)
{
return(DkmFailedEvaluationResult.Create(inspectionContext, stackFrame, "[function]", $"{fullName}.!function", "[internal error: failed to read source]", DkmEvaluationResultFlags.Invalid, null));
}
int line = functionData.definitionStartLine_opt;
DkmEvaluationResultCategory category = DkmEvaluationResultCategory.Method;
DkmEvaluationResultTypeModifierFlags typeModifiers = DkmEvaluationResultTypeModifierFlags.None;
DkmEvaluationResultAccessType access = DkmEvaluationResultAccessType.Public;
DkmEvaluationResultStorageType storage = DkmEvaluationResultStorageType.Global;
LuaAddressEntityData entityData = new LuaAddressEntityData
{
source = source,
line = line,
functionAddress = 0,
functionInstructionPointer = 0,
};
var entityDataBytes = entityData.Encode();
DkmInstructionAddress instructionAddress = DkmCustomInstructionAddress.Create(processData.runtimeInstance, processData.moduleInstance, entityDataBytes, (ulong)((line << 16) + 0), null, null);
DkmDataAddress dataAddress = DkmDataAddress.Create(processData.runtimeInstance, value.functionAddress, instructionAddress);
return(DkmSuccessEvaluationResult.Create(inspectionContext, stackFrame, "[function]", $"{fullName}.!function", DkmEvaluationResultFlags.ReadOnly | DkmEvaluationResultFlags.Address, $"{source}:{line}", null, "Proto*", category, access, storage, typeModifiers, dataAddress, null, null, null));
}
Debug.Assert(false, "Invalid child index");
return(null);
}
DkmStackWalkFrame[] IDkmCallStackFilter.FilterNextFrame(DkmStackContext stackContext, DkmStackWalkFrame input)
{
if (input == null) // null input frame indicates the end of the call stack. This sample does nothing on end-of-stack.
{
var processData = DebugHelpers.GetOrCreateDataItem <NullcStackFilterDataItem>(stackContext.InspectionSession.Process);
processData.nullcFramePosition = 1;
return(null);
}
if (input.InstructionAddress == null)
{
return(new DkmStackWalkFrame[1] {
input
});
}
if (input.InstructionAddress.ModuleInstance != null)
{
if (input.BasicSymbolInfo != null && input.BasicSymbolInfo.MethodName == "ExecutorRegVm::RunCode")
{
var processData = DebugHelpers.GetOrCreateDataItem <NullcStackFilterDataItem>(input.Thread.Process);
InitNullcDebugFunctions(processData, input.RuntimeInstance);
if (processData.nullcIsMissing)
{
return(new DkmStackWalkFrame[1] {
input
});
}
string vmInstructionStr = ExecuteExpression("instruction - codeBase", stackContext, input, true);
string ptrValue = DebugHelpers.Is64Bit(input.Thread.Process) ? "longValue" : "intValue";
string vmDataOffsetStr = ExecuteExpression($"(unsigned long long)regFilePtr[1].{ptrValue} - (unsigned long long)rvm->dataStack.data", stackContext, input, true);
if (vmInstructionStr != null && vmDataOffsetStr != null)
{
ulong vmInstruction = ulong.Parse(vmInstructionStr);
string stackFrameDesc = ExecuteExpression($"((char*(*)(unsigned, unsigned)){processData.nullcDebugGetVmAddressLocation})({vmInstruction}, 0),sb", stackContext, input, false);
var nullcCustomRuntime = input.Thread.Process.GetRuntimeInstances().OfType <DkmCustomRuntimeInstance>().FirstOrDefault(el => el.Id.RuntimeType == DebugHelpers.NullcVmRuntimeGuid);
if (stackFrameDesc != null && nullcCustomRuntime != null)
{
var flags = input.Flags;
flags = flags & ~(DkmStackWalkFrameFlags.NonuserCode | DkmStackWalkFrameFlags.UserStatusNotDetermined);
flags = flags | DkmStackWalkFrameFlags.InlineOptimized;
DkmCustomModuleInstance nullcModuleInstance = nullcCustomRuntime.GetModuleInstances().OfType <DkmCustomModuleInstance>().FirstOrDefault(el => el.Module != null && el.Module.CompilerId.VendorId == DebugHelpers.NullcCompilerGuid);
if (nullcModuleInstance != null)
{
DkmInstructionAddress instructionAddress = DkmCustomInstructionAddress.Create(nullcCustomRuntime, nullcModuleInstance, null, vmInstruction, null, null);
var rawAnnotations = new List <DkmStackWalkFrameAnnotation>();
// Additional unique request id
rawAnnotations.Add(DkmStackWalkFrameAnnotation.Create(DebugHelpers.NullcCallStackDataBaseGuid, ulong.Parse(vmDataOffsetStr)));
var annotations = new ReadOnlyCollection <DkmStackWalkFrameAnnotation>(rawAnnotations);
DkmStackWalkFrame frame = DkmStackWalkFrame.Create(stackContext.Thread, instructionAddress, input.FrameBase, input.FrameSize, flags, stackFrameDesc, input.Registers, annotations, nullcModuleInstance, null, null);
return(new DkmStackWalkFrame[2] {
frame, input
});
}
}
}
}
return(new DkmStackWalkFrame[1] {
input
});
}
// Currently we want to provide info only for JiT frames
if (!input.Flags.HasFlag(DkmStackWalkFrameFlags.UserStatusNotDetermined))
{
return(new DkmStackWalkFrame[1] {
input
});
}
try
{
var processData = DebugHelpers.GetOrCreateDataItem <NullcStackFilterDataItem>(input.Thread.Process);
InitNullcDebugFunctions(processData, input.RuntimeInstance);
if (processData.nullcIsMissing)
{
return new DkmStackWalkFrame[1] {
input
}
}
;
string stackFrameDesc = ExecuteExpression($"((char*(*)(void*, unsigned)){processData.nullcDebugGetNativeAddressLocation})((void*)0x{input.InstructionAddress.CPUInstructionPart.InstructionPointer:X}, 0),sb", stackContext, input, false);
if (stackFrameDesc != null)
{
var flags = input.Flags;
flags = flags & ~(DkmStackWalkFrameFlags.NonuserCode | DkmStackWalkFrameFlags.UserStatusNotDetermined);
if (stackFrameDesc == "[Transition to nullc]")
{
return(new DkmStackWalkFrame[1] {
DkmStackWalkFrame.Create(stackContext.Thread, input.InstructionAddress, input.FrameBase, input.FrameSize, flags, stackFrameDesc, input.Registers, input.Annotations)
});
}
DkmStackWalkFrame frame = null;
var nullcCustomRuntime = input.Thread.Process.GetRuntimeInstances().OfType <DkmCustomRuntimeInstance>().FirstOrDefault(el => el.Id.RuntimeType == DebugHelpers.NullcRuntimeGuid);
var nullcNativeRuntime = DebugHelpers.useDefaultRuntimeInstance ? input.Thread.Process.GetNativeRuntimeInstance() : input.Thread.Process.GetRuntimeInstances().OfType <DkmNativeRuntimeInstance>().FirstOrDefault(el => el.Id.RuntimeType == DebugHelpers.NullcRuntimeGuid);
if (DebugHelpers.useNativeInterfaces ? nullcNativeRuntime != null : nullcCustomRuntime != null)
{
DkmModuleInstance nullcModuleInstance;
if (DebugHelpers.useNativeInterfaces)
{
nullcModuleInstance = nullcNativeRuntime.GetModuleInstances().OfType <DkmNativeModuleInstance>().FirstOrDefault(el => el.Module != null && el.Module.CompilerId.VendorId == DebugHelpers.NullcCompilerGuid);
}
else
{
nullcModuleInstance = nullcCustomRuntime.GetModuleInstances().OfType <DkmCustomModuleInstance>().FirstOrDefault(el => el.Module != null && el.Module.CompilerId.VendorId == DebugHelpers.NullcCompilerGuid);
}
if (nullcModuleInstance != null)
{
// If the top of the call stack is a nullc frame, nullc call stack wont have an entry for it and we start from 0, otherwise we start from default value of 1
if (input.Flags.HasFlag(DkmStackWalkFrameFlags.TopFrame))
{
processData.nullcFramePosition = 0;
}
string stackFrameBase = ExecuteExpression($"((unsigned(*)(unsigned)){processData.nullcDebugGetReversedStackDataBase})({processData.nullcFramePosition})", stackContext, input, true);
processData.nullcFramePosition++;
if (int.TryParse(stackFrameBase, out int stackFrameBaseValue))
{
DkmInstructionAddress instructionAddress;
if (DebugHelpers.useNativeInterfaces)
{
var rva = (uint)(input.InstructionAddress.CPUInstructionPart.InstructionPointer - nullcModuleInstance.BaseAddress);
instructionAddress = DkmNativeInstructionAddress.Create(nullcNativeRuntime, nullcModuleInstance as DkmNativeModuleInstance, rva, input.InstructionAddress.CPUInstructionPart);
}
else
{
instructionAddress = DkmCustomInstructionAddress.Create(nullcCustomRuntime, nullcModuleInstance as DkmCustomModuleInstance, null, input.InstructionAddress.CPUInstructionPart.InstructionPointer, null, input.InstructionAddress.CPUInstructionPart);
}
var rawAnnotations = new List <DkmStackWalkFrameAnnotation>();
// Additional unique request id
rawAnnotations.Add(DkmStackWalkFrameAnnotation.Create(DebugHelpers.NullcCallStackDataBaseGuid, (ulong)(stackFrameBaseValue)));
var annotations = new ReadOnlyCollection <DkmStackWalkFrameAnnotation>(rawAnnotations);
frame = DkmStackWalkFrame.Create(stackContext.Thread, instructionAddress, input.FrameBase, input.FrameSize, flags, stackFrameDesc, input.Registers, annotations, nullcModuleInstance, null, null);
}
}
}
if (frame == null)
{
frame = DkmStackWalkFrame.Create(stackContext.Thread, input.InstructionAddress, input.FrameBase, input.FrameSize, flags, stackFrameDesc, input.Registers, input.Annotations);
}
return(new DkmStackWalkFrame[1] {
frame
});
}
}
catch (Exception ex)
{
Console.WriteLine("Failed to evaluate: " + ex.ToString());
}
return(new DkmStackWalkFrame[1] {
input
});
}
