using System.Collections.Generic;
using Mono.Cecil;
using Mono.CompilerServices.SymbolWriter;
+using System.Runtime.InteropServices;
namespace Symbolicate
{
return true;
}
+ [DllImport("mono-symbolicate-native.dll")]
+ private static extern bool mono_seq_point_data_get_il_offset (string path, uint method_token, uint method_index, uint native_offset, out uint il_offset);
+
static MethodInfo methodGetIL;
private int GetILOffsetFromFile (int methodToken, uint methodIndex, int nativeOffset)
{
- if (string.IsNullOrEmpty (seqPointDataPath))
- return -1;
-
- if (methodGetIL == null)
- methodGetIL = typeof (StackFrame).GetMethod ("GetILOffsetFromFile", BindingFlags.NonPublic | BindingFlags.Static);
-
- if (methodGetIL == null)
- throw new Exception ("System.Diagnostics.StackFrame.GetILOffsetFromFile could not be found, make sure you have an updated mono installed.");
+ uint ilOffset;
+ mono_seq_point_data_get_il_offset (seqPointDataPath, (uint) methodToken, methodIndex, (uint) nativeOffset, out ilOffset);
- return (int) methodGetIL.Invoke (null, new object[] {seqPointDataPath, methodToken, methodIndex, nativeOffset});
+ return (int) ilOffset;
}
private string GetMethodFullName (MethodBase m)
--- /dev/null
+using System;
+using System.IO;
+using System.Collections.Generic;
+
+namespace Symbolicate
+{
+ static class BinaryReaderExtensions
+ {
+ public static int ReadVariableInt (this BinaryReader reader)
+ {
+ int val = 0;
+ for (var i = 0; i < 4; i++) {
+ var b = reader.ReadByte ();
+ val |= (b & 0x7f) << (7 * i);
+ if ((b & 0x80) == 0)
+ return val;
+ }
+
+ throw new Exception ("Invalid variable int");
+ }
+
+ public static int ReadVariableZigZagInt (this BinaryReader reader)
+ {
+ int enc = ReadVariableInt (reader);
+ int val = enc >> 1;
+ return ((enc & 1) == 0)? val : -val;
+ }
+ }
+
+ class SeqPointInfo
+ {
+ class MethodData
+ {
+ List<SeqPoint> seqPoints;
+
+ public static MethodData Read (BinaryReader reader)
+ {
+ var hasDebugData = reader.ReadVariableInt () != 0;
+ var dataSize = reader.ReadVariableInt ();
+ var dataEnd = reader.BaseStream.Position + dataSize;
+
+ var seqPoints = new List<SeqPoint> ();
+ SeqPoint prev = null;
+ while (reader.BaseStream.Position < dataEnd) {
+ var seqPoint = SeqPoint.Read (reader, prev, hasDebugData);
+ seqPoints.Add (seqPoint);
+ prev = seqPoint;
+ }
+
+ if (reader.BaseStream.Position != dataEnd)
+ throw new Exception ("Read more seq point than expected.");
+
+ return new MethodData () { seqPoints = seqPoints };
+ }
+
+ public bool TryGetILOffset (int nativeOffset, out int ilOffset)
+ {
+ ilOffset = 0;
+ SeqPoint prev = null;
+ foreach (var seqPoint in seqPoints) {
+ if (seqPoint.NativeOffset > nativeOffset)
+ break;
+ prev = seqPoint;
+ }
+
+ if (prev == null)
+ return false;
+
+ ilOffset = prev.ILOffset;
+ return true;
+ }
+ }
+
+ class SeqPoint
+ {
+ public readonly int ILOffset;
+ public readonly int NativeOffset;
+
+ public SeqPoint (int ilOffset, int nativeOffset)
+ {
+ ILOffset = ilOffset;
+ NativeOffset = nativeOffset;
+ }
+
+ public static SeqPoint Read (BinaryReader reader, SeqPoint prev, bool hasDebug)
+ {
+ var ilOffset = reader.ReadVariableZigZagInt ();
+ var nativeOffset = reader.ReadVariableZigZagInt ();
+
+ // Respect delta encoding
+ if (prev != null) {
+ ilOffset += prev.ILOffset;
+ nativeOffset += prev.NativeOffset;
+ }
+
+ //Read everything to ensure the buffer position is at the end of the seq point data.
+ if (hasDebug) {
+ reader.ReadVariableInt (); // flags
+
+ var next_length = reader.ReadVariableInt ();
+ for (var i = 0; i < next_length; ++i)
+ reader.ReadVariableInt ();
+ }
+
+ return new SeqPoint (ilOffset, nativeOffset);
+ }
+ };
+
+ Dictionary<Tuple<int,int>, MethodData> dataByIds;
+ Dictionary<int, MethodData> dataByTokens;
+
+ public static SeqPointInfo Read (string path)
+ {
+ using (var reader = new BinaryReader (File.Open (path, FileMode.Open)))
+ {
+ var dataByIds = new Dictionary<Tuple<int,int>, MethodData> ();
+ var dataByTokens = new Dictionary<int, MethodData> ();
+
+ var methodCount = reader.ReadVariableInt ();
+
+ for (var i = 0; i < methodCount; ++i) {
+ var methodToken = reader.ReadVariableInt ();
+ var methodIndex = reader.ReadVariableInt ();
+ var methodId = new Tuple<int, int> (methodToken, methodIndex);
+
+ var methodData = MethodData.Read (reader);
+
+ dataByIds.Add (methodId, methodData);
+ if (!dataByTokens.ContainsKey (methodToken))
+ dataByTokens.Add (methodToken, methodData);
+ }
+
+ return new SeqPointInfo { dataByIds = dataByIds, dataByTokens = dataByTokens };
+ }
+ }
+
+ public int GetILOffset (int methodToken, uint methodIndex, int nativeOffset)
+ {
+ MethodData methodData;
+ if (methodIndex == 0xffffff) {
+ if (!dataByTokens.TryGetValue (methodToken, out methodData))
+ throw new Exception (string.Format ("Could not find data for method token {0:X}", methodToken));
+ } else {
+ var methodId = new Tuple<int, int> (methodToken, (int)methodIndex);
+ if (!dataByIds.TryGetValue (methodId, out methodData))
+ throw new Exception (string.Format ("Could not find data for method token {0:X} with index {1:X}", methodToken, methodIndex));
+ }
+
+ int ilOffset;
+ if (!methodData.TryGetILOffset (nativeOffset, out ilOffset))
+ throw new Exception ("Could not retrieve IL offset");
+
+ return ilOffset;
+ }
+ }
+}
projects / mono.git / commitdiff