Example #1
0
        // 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();
            }
        }
Example #2
0
        // 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();
            }
        }