// Create a DebugLocInfo which is a table from native offset to sourece line.
// using native to il offset (pMap) and il to source line (_sequencePoints).
private void setBoundaries(IntPtr _this, CORINFO_METHOD_STRUCT_* ftn, uint cMap, OffsetMapping* pMap)
{
Debug.Assert(_debugLocInfos == null);
// No interest if sequencePoints is not populated before.
if (_sequencePoints == null)
{
return;
}
List<DebugLocInfo> debugLocInfos = new List<DebugLocInfo>();
for (int i = 0; i < cMap; i++)
{
SequencePoint s;
if (_sequencePoints.TryGetValue((int)pMap[i].ilOffset, out s))
{
Debug.Assert(!string.IsNullOrEmpty(s.Document));
int nativeOffset = (int)pMap[i].nativeOffset;
DebugLocInfo loc = new DebugLocInfo(nativeOffset, s.Document, s.LineNumber);
// https://github.com/dotnet/corert/issues/270
// We often miss line number at 0 offset, which prevents debugger from
// stepping into callee.
// Synthesize a location info at 0 offset assuming line number is minus one
// from the first entry.
if (debugLocInfos.Count == 0 && nativeOffset != 0)
{
DebugLocInfo firstLoc = loc;
firstLoc.NativeOffset = 0;
firstLoc.LineNumber--;
debugLocInfos.Add(firstLoc);
}
debugLocInfos.Add(loc);
}
}
if (debugLocInfos.Count > 0)
{
_debugLocInfos = debugLocInfos.ToArray();
}
}
// Create a DebugLocInfo which is a table from native offset to source line.
// using native to il offset (pMap) and il to source line (_sequencePoints).
private void setBoundaries(CORINFO_METHOD_STRUCT_* ftn, uint cMap, OffsetMapping* pMap)
{
Debug.Assert(_debugLocInfos == null);
// No interest if sequencePoints is not populated before.
if (_sequencePoints == null)
{
return;
}
int largestILOffset = 0; // All epiloges point to the largest IL offset.
for (int i = 0; i < cMap; i++)
{
OffsetMapping nativeToILInfo = pMap[i];
int currectILOffset = (int)nativeToILInfo.ilOffset;
if (currectILOffset > largestILOffset) // Special offsets are negative.
{
largestILOffset = currectILOffset;
}
}
int previousNativeOffset = -1;
List<DebugLocInfo> debugLocInfos = new List<DebugLocInfo>();
for (int i = 0; i < cMap; i++)
{
OffsetMapping nativeToILInfo = pMap[i];
int ilOffset = (int)nativeToILInfo.ilOffset;
int nativeOffset = (int)pMap[i].nativeOffset;
if (nativeOffset == previousNativeOffset)
{
// Save the first one, skip others.
continue;
}
switch (ilOffset)
{
case (int)MappingTypes.PROLOG:
ilOffset = 0;
break;
case (int)MappingTypes.EPILOG:
ilOffset = largestILOffset;
break;
case (int)MappingTypes.NO_MAPPING:
continue;
}
SequencePoint s;
if (_sequencePoints.TryGetValue((int)ilOffset, out s))
{
Debug.Assert(!string.IsNullOrEmpty(s.Document));
DebugLocInfo loc = new DebugLocInfo(nativeOffset, s.Document, s.LineNumber);
debugLocInfos.Add(loc);
previousNativeOffset = nativeOffset;
}
}
if (debugLocInfos.Count > 0)
{
_debugLocInfos = debugLocInfos.ToArray();
}
}