/// <summary>
/// Gets the MDbgSourcePosition from a given CorFrame.
/// </summary>
/// <param name="frame">The CorFrame.</param>
/// <returns>The MDbgSourcePosition of the given frame.</returns>
public MDbgSourcePosition GetSourcePositionFromFrame(CorFrame frame)
{
// EnsureIsUpToDate is called from GetSourcePositionFromIP
// we only support this, when the frame is our function
Debug.Assert(frame.FunctionToken == m_function.Token);
uint ip;
CorDebugMappingResult mappingResult;
frame.GetIP(out ip, out mappingResult);
// MAPPING_APPROXIMATE, MAPPING_EXACT, MAPPING_PROLOG, or MAPPING_EPILOG are all ok and we should show sources.
// But these two indicate that something went wrong and nothing is available.
if (mappingResult == CorDebugMappingResult.MAPPING_NO_INFO ||
mappingResult == CorDebugMappingResult.MAPPING_UNMAPPED_ADDRESS)
return null;
return GetSourcePositionFromIP((int)ip);
}
internal static StackFrame CreateFrame (CorDebuggerSession session, CorFrame frame)
{
uint address = 0;
string file = "";
int line = 0;
string method = "";
string lang = "";
string module = "";
string type = "";
if (frame.FrameType == CorFrameType.ILFrame) {
if (frame.Function != null) {
module = frame.Function.Module.Name;
CorMetadataImport importer = new CorMetadataImport (frame.Function.Module);
MethodInfo mi = importer.GetMethodInfo (frame.Function.Token);
method = mi.DeclaringType.FullName + "." + mi.Name;
type = mi.DeclaringType.FullName;
ISymbolReader reader = session.GetReaderForModule (frame.Function.Module.Name);
if (reader != null) {
ISymbolMethod met = reader.GetMethod (new SymbolToken (frame.Function.Token));
if (met != null) {
uint offset;
CorDebugMappingResult mappingResult;
frame.GetIP (out offset, out mappingResult);
SequencePoint prevSp = null;
foreach (SequencePoint sp in met.GetSequencePoints ()) {
if (sp.Offset > offset)
break;
prevSp = sp;
}
if (prevSp != null) {
line = prevSp.Line;
file = prevSp.Document.URL;
}
}
}
}
lang = "Managed";
}
else if (frame.FrameType == CorFrameType.NativeFrame) {
frame.GetNativeIP (out address);
method = "<Unknown>";
lang = "Native";
}
else if (frame.FrameType == CorFrameType.InternalFrame) {
switch (frame.InternalFrameType) {
case CorDebugInternalFrameType.STUBFRAME_M2U: method = "[Managed to Native Transition]"; break;
case CorDebugInternalFrameType.STUBFRAME_U2M: method = "[Native to Managed Transition]"; break;
case CorDebugInternalFrameType.STUBFRAME_LIGHTWEIGHT_FUNCTION: method = "[Lightweight Method Call]"; break;
case CorDebugInternalFrameType.STUBFRAME_APPDOMAIN_TRANSITION: method = "[Application Domain Transition]"; break;
case CorDebugInternalFrameType.STUBFRAME_FUNC_EVAL: method = "[Function Evaluation]"; break;
}
}
if (method == null)
method = "<Unknown>";
var loc = new SourceLocation (method, file, line);
return new StackFrame ((long) address, loc, lang);
}
private SequencePoint get_location(CorFrame frame, out uint offset)
{
CorDebugMappingResult mapping_result;
frame.GetIP(out offset, out mapping_result);
if (frame.FrameType != CorFrameType.ILFrame)
return null;
return get_location(frame.Function, offset);
}
internal static StackFrame CreateFrame (CorDebuggerSession session, CorFrame frame)
{
// TODO: Fix remaining.
uint address = 0;
//string typeFQN;
//string typeFullName;
string addressSpace = "";
string file = "";
int line = 0;
int column = 0;
string method = "";
string lang = "";
string module = "";
string type = "";
bool hasDebugInfo = false;
bool hidden = false;
bool external = true;
if (frame.FrameType == CorFrameType.ILFrame) {
if (frame.Function != null) {
module = frame.Function.Module.Name;
CorMetadataImport importer = new CorMetadataImport (frame.Function.Module);
MethodInfo mi = importer.GetMethodInfo (frame.Function.Token);
method = mi.DeclaringType.FullName + "." + mi.Name;
type = mi.DeclaringType.FullName;
addressSpace = mi.Name;
ISymbolReader reader = session.GetReaderForModule (frame.Function.Module.Name);
if (reader != null) {
ISymbolMethod met = reader.GetMethod (new SymbolToken (frame.Function.Token));
if (met != null) {
CorDebugMappingResult mappingResult;
frame.GetIP (out address, out mappingResult);
SequencePoint prevSp = null;
foreach (SequencePoint sp in met.GetSequencePoints ()) {
if (sp.Offset > address)
break;
prevSp = sp;
}
if (prevSp != null) {
line = prevSp.Line;
column = prevSp.Offset;
file = prevSp.Document.URL;
address = (uint)prevSp.Offset;
}
}
}
// FIXME: Still steps into.
//hidden = mi.GetCustomAttributes (true).Any (v => v is System.Diagnostics.DebuggerHiddenAttribute);
}
lang = "Managed";
hasDebugInfo = true;
}
else if (frame.FrameType == CorFrameType.NativeFrame) {
frame.GetNativeIP (out address);
method = "<Unknown>";
lang = "Native";
}
else if (frame.FrameType == CorFrameType.InternalFrame) {
switch (frame.InternalFrameType) {
case CorDebugInternalFrameType.STUBFRAME_M2U: method = "[Managed to Native Transition]"; break;
case CorDebugInternalFrameType.STUBFRAME_U2M: method = "[Native to Managed Transition]"; break;
case CorDebugInternalFrameType.STUBFRAME_LIGHTWEIGHT_FUNCTION: method = "[Lightweight Method Call]"; break;
case CorDebugInternalFrameType.STUBFRAME_APPDOMAIN_TRANSITION: method = "[Application Domain Transition]"; break;
case CorDebugInternalFrameType.STUBFRAME_FUNC_EVAL: method = "[Function Evaluation]"; break;
}
}
if (method == null)
method = "<Unknown>";
var loc = new SourceLocation (method, file, line, column);
return new StackFrame ((long) address, addressSpace, loc, lang, external, hasDebugInfo, hidden, null, null);
}
public static SequencePoint GetSequencePoint(CorDebuggerSession session, CorFrame frame)
{
ISymbolReader reader = session.GetReaderForModule (frame.Function.Module.Name);
if (reader == null)
return null;
ISymbolMethod met = reader.GetMethod (new SymbolToken (frame.Function.Token));
if (met == null)
return null;
int SequenceCount = met.SequencePointCount;
if (SequenceCount <= 0)
return null;
CorDebugMappingResult mappingResult;
uint ip;
frame.GetIP (out ip, out mappingResult);
if (mappingResult == CorDebugMappingResult.MAPPING_NO_INFO || mappingResult == CorDebugMappingResult.MAPPING_UNMAPPED_ADDRESS)
return null;
int[] offsets = new int[SequenceCount];
int[] lines = new int[SequenceCount];
int[] endLines = new int[SequenceCount];
int[] columns = new int[SequenceCount];
int[] endColumns = new int[SequenceCount];
ISymbolDocument[] docs = new ISymbolDocument[SequenceCount];
met.GetSequencePoints (offsets, docs, lines, columns, endLines, endColumns);
if ((SequenceCount > 0) && (offsets [0] <= ip)) {
int i;
for (i = 0; i < SequenceCount; ++i) {
if (offsets [i] >= ip) {
break;
}
}
if ((i == SequenceCount) || (offsets [i] != ip)) {
--i;
}
if (lines [i] == SpecialSequencePoint) {
int j = i;
// let's try to find a sequence point that is not special somewhere earlier in the code
// stream.
while (j > 0) {
--j;
if (lines [j] != SpecialSequencePoint) {
return new SequencePoint () {
IsSpecial = true,
Offset = offsets [j],
StartLine = lines [j],
EndLine = endLines [j],
StartColumn = columns [j],
EndColumn = endColumns [j],
Document = docs [j]
};
}
}
// we didn't find any non-special seqeunce point before current one, let's try to search
// after.
j = i;
while (++j < SequenceCount) {
if (lines [j] != SpecialSequencePoint) {
return new SequencePoint () {
IsSpecial = true,
Offset = offsets [j],
StartLine = lines [j],
EndLine = endLines [j],
StartColumn = columns [j],
EndColumn = endColumns [j],
Document = docs [j]
};
}
}
// Even if sp is null at this point, it's a valid scenario to have only special sequence
// point in a function. For example, we can have a compiler-generated default ctor which
// doesn't have any source.
return null;
} else {
return new SequencePoint () {
IsSpecial = false,
Offset = offsets [i],
StartLine = lines [i],
EndLine = endLines [i],
StartColumn = columns [i],
EndColumn = endColumns [i],
Document = docs [i]
};
}
}
return null;
}
