public RuntimeFunction(
int id,
int startRva,
int endRva,
int unwindRva,
int codeOffset,
R2RMethod method,
BaseUnwindInfo unwindInfo,
BaseGcInfo gcInfo,
EHInfo ehInfo,
DebugInfo debugInfo)
{
Id = id;
StartAddress = startRva;
UnwindRVA = unwindRva;
Method = method;
UnwindInfo = unwindInfo;
DebugInfo = debugInfo;
if (endRva != -1)
{
Size = endRva - startRva;
}
else if (unwindInfo is x86.UnwindInfo)
{
Size = (int)((x86.UnwindInfo)unwindInfo).FunctionLength;
}
else if (unwindInfo is Arm.UnwindInfo)
{
Size = (int)((Arm.UnwindInfo)unwindInfo).FunctionLength;
}
else if (unwindInfo is Arm64.UnwindInfo)
{
Size = (int)((Arm64.UnwindInfo)unwindInfo).FunctionLength;
}
else if (gcInfo != null)
{
Size = gcInfo.CodeLength;
}
else
{
Size = -1;
}
CodeOffset = codeOffset;
method.GcInfo = gcInfo;
EHInfo = ehInfo;
}
public void WriteTo(TextWriter writer, DumpOptions options)
{
if (!options.Naked)
{
writer.WriteLine($"Id: {Id}");
writer.WriteLine($"StartAddress: 0x{StartAddress:X8}");
}
if (Size == -1)
{
writer.WriteLine("Size: Unavailable");
}
else
{
writer.WriteLine($"Size: {Size} bytes");
}
if (!options.Naked)
{
writer.WriteLine($"UnwindRVA: 0x{UnwindRVA:X8}");
}
if (UnwindInfo is Amd64.UnwindInfo amd64UnwindInfo)
{
string parsedFlags = "";
if ((amd64UnwindInfo.Flags & (int)Amd64.UnwindFlags.UNW_FLAG_EHANDLER) != 0)
{
parsedFlags += " EHANDLER";
}
if ((amd64UnwindInfo.Flags & (int)Amd64.UnwindFlags.UNW_FLAG_UHANDLER) != 0)
{
parsedFlags += " UHANDLER";
}
if ((amd64UnwindInfo.Flags & (int)Amd64.UnwindFlags.UNW_FLAG_CHAININFO) != 0)
{
parsedFlags += " CHAININFO";
}
if (parsedFlags.Length == 0)
{
parsedFlags = " NHANDLER";
}
writer.WriteLine($"Version: {amd64UnwindInfo.Version}");
writer.WriteLine($"Flags: 0x{amd64UnwindInfo.Flags:X2}{parsedFlags}");
writer.WriteLine($"SizeOfProlog: 0x{amd64UnwindInfo.SizeOfProlog:X4}");
writer.WriteLine($"CountOfUnwindCodes: {amd64UnwindInfo.CountOfUnwindCodes}");
writer.WriteLine($"FrameRegister: {amd64UnwindInfo.FrameRegister}");
writer.WriteLine($"FrameOffset: 0x{amd64UnwindInfo.FrameOffset}");
if (!options.Naked)
{
writer.WriteLine($"PersonalityRVA: 0x{amd64UnwindInfo.PersonalityRoutineRVA:X4}");
}
for (int unwindCodeIndex = 0; unwindCodeIndex < amd64UnwindInfo.CountOfUnwindCodes; unwindCodeIndex++)
{
Amd64.UnwindCode unwindCode = amd64UnwindInfo.UnwindCodeArray[unwindCodeIndex];
writer.Write($"UnwindCode[{unwindCode.Index}]: ");
writer.Write($"CodeOffset 0x{unwindCode.CodeOffset:X4} ");
writer.Write($"FrameOffset 0x{unwindCode.FrameOffset:X4} ");
writer.Write($"NextOffset 0x{unwindCode.NextFrameOffset} ");
writer.Write($"Op {unwindCode.OpInfoStr}");
writer.WriteLine();
}
}
writer.WriteLine();
if (Method.GcInfo is Amd64.GcInfo gcInfo)
{
writer.WriteLine("GC info:");
writer.WriteLine($@" Version: {gcInfo.Version}");
writer.WriteLine($@" ReturnKind: {gcInfo.ReturnKind}");
writer.WriteLine($@" ValidRangeStart: 0x{gcInfo.ValidRangeStart:X4}");
writer.WriteLine($@" ValidRangeEnd: 0x{gcInfo.ValidRangeEnd:X4}");
writer.WriteLine($@" SecurityObjectStackSlot: 0x{gcInfo.SecurityObjectStackSlot:X4}");
writer.WriteLine($@" GSCookieStackSlot: 0x{gcInfo.GSCookieStackSlot:X4}");
writer.WriteLine($@" PSPSymStackSlot: 0x{gcInfo.PSPSymStackSlot:X4}");
writer.WriteLine($@" GenericsInstContextStackSlot: 0x{gcInfo.GenericsInstContextStackSlot:X4}");
writer.WriteLine($@" StackBaseRegister: {gcInfo.StackBaseRegister}");
writer.WriteLine($@" SizeOfENCPreservedArea: 0x{gcInfo.SizeOfEditAndContinuePreservedArea:X4}");
writer.WriteLine($@" ReversePInvokeFrameStackSlot: 0x{gcInfo.ReversePInvokeFrameStackSlot:X4}");
writer.WriteLine($@" SizeOfStackOutgoingAndScratchArea: 0x{gcInfo.SizeOfStackOutgoingAndScratchArea:X4}");
writer.WriteLine($@" NumSafePoints: {gcInfo.NumSafePoints}");
writer.WriteLine($@" NumInterruptibleRanges: {gcInfo.NumInterruptibleRanges}");
writer.WriteLine($@" SafePointOffsets: {gcInfo.SafePointOffsets.Count}");
foreach (Amd64.GcInfo.SafePointOffset safePoint in gcInfo.SafePointOffsets)
{
writer.WriteLine($@" Index: {safePoint.Index,2}; Value: 0x{safePoint.Value:X4}");
if (gcInfo.LiveSlotsAtSafepoints != null)
{
writer.WriteLine($@" Live slots: {String.Join(", ", gcInfo.LiveSlotsAtSafepoints[safePoint.Index])}");
}
}
writer.WriteLine($@" InterruptibleRanges: {gcInfo.InterruptibleRanges.Count}");
foreach (Amd64.InterruptibleRange range in gcInfo.InterruptibleRanges)
{
writer.WriteLine($@" Index: {range.Index,2}; StartOffset: 0x{range.StartOffset:X4}; StopOffset: 0x{range.StopOffset:X4}");
}
writer.WriteLine(" SlotTable:");
writer.WriteLine($@" NumRegisters: {gcInfo.SlotTable.NumRegisters}");
writer.WriteLine($@" NumStackSlots: {gcInfo.SlotTable.NumStackSlots}");
writer.WriteLine($@" NumUntracked: {gcInfo.SlotTable.NumUntracked}");
writer.WriteLine($@" NumSlots: {gcInfo.SlotTable.NumSlots}");
writer.WriteLine($@" GcSlots: {gcInfo.SlotTable.GcSlots.Count}");
foreach (Amd64.GcSlotTable.GcSlot slot in gcInfo.SlotTable.GcSlots)
{
writer.WriteLine($@" Index: {slot.Index,2}; RegisterNumber: {slot.RegisterNumber,2}; Flags: {slot.Flags}");
}
writer.WriteLine();
}
if (EHInfo != null)
{
writer.WriteLine($@"EH info @ {EHInfo.EHInfoRVA:X4}, #clauses = {EHInfo.EHClauses.Length}");
EHInfo.WriteTo(writer);
writer.WriteLine();
}
if (DebugInfo != null)
{
DebugInfo.WriteTo(writer, options);
}
}
public void WriteTo(TextWriter writer, DumpOptions options)
{
writer.WriteLine($"Id: {Id}");
writer.WriteLine($"StartAddress: 0x{StartAddress:X8}");
if (Size == -1)
{
writer.WriteLine("Size: Unavailable");
}
else
{
writer.WriteLine($"Size: {Size} bytes");
}
writer.WriteLine($"UnwindRVA: 0x{UnwindRVA:X8}");
if (UnwindInfo is Amd64.UnwindInfo amd64UnwindInfo)
{
string parsedFlags = "";
if ((amd64UnwindInfo.Flags & (int)Amd64.UnwindFlags.UNW_FLAG_EHANDLER) != 0)
{
parsedFlags += " EHANDLER";
}
if ((amd64UnwindInfo.Flags & (int)Amd64.UnwindFlags.UNW_FLAG_UHANDLER) != 0)
{
parsedFlags += " UHANDLER";
}
if ((amd64UnwindInfo.Flags & (int)Amd64.UnwindFlags.UNW_FLAG_CHAININFO) != 0)
{
parsedFlags += " CHAININFO";
}
if (parsedFlags.Length == 0)
{
parsedFlags = " NHANDLER";
}
writer.WriteLine($"Version: {amd64UnwindInfo.Version}");
writer.WriteLine($"Flags: 0x{amd64UnwindInfo.Flags:X2}{parsedFlags}");
writer.WriteLine($"SizeOfProlog: 0x{amd64UnwindInfo.SizeOfProlog:X4}");
writer.WriteLine($"CountOfUnwindCodes: {amd64UnwindInfo.CountOfUnwindCodes}");
writer.WriteLine($"FrameRegister: {amd64UnwindInfo.FrameRegister}");
writer.WriteLine($"FrameOffset: 0x{amd64UnwindInfo.FrameOffset}");
writer.WriteLine($"PersonalityRVA: 0x{amd64UnwindInfo.PersonalityRoutineRVA:X4}");
for (int unwindCodeIndex = 0; unwindCodeIndex < amd64UnwindInfo.CountOfUnwindCodes; unwindCodeIndex++)
{
Amd64.UnwindCode unwindCode = amd64UnwindInfo.UnwindCodeArray[unwindCodeIndex];
writer.Write($"UnwindCode[{unwindCode.Index}]: ");
writer.Write($"CodeOffset 0x{unwindCode.CodeOffset:X4} ");
writer.Write($"FrameOffset 0x{unwindCode.FrameOffset:X4} ");
writer.Write($"NextOffset 0x{unwindCode.NextFrameOffset} ");
writer.Write($"Op {unwindCode.OpInfoStr}");
writer.WriteLine();
}
}
writer.WriteLine();
if (EHInfo != null)
{
writer.WriteLine($@"EH info @ {EHInfo.EHInfoRVA:X4}, #clauses = {EHInfo.EHClauses.Length}");
EHInfo.WriteTo(writer);
writer.WriteLine();
}
if (DebugInfo != null)
{
DebugInfo.WriteTo(writer, options);
}
}
/// <summary>
/// Get the RVAs of the runtime functions for each method
/// based on <a href="https://github.com/dotnet/coreclr/blob/master/src/zap/zapcode.cpp">ZapUnwindInfo::Save</a>
/// </summary>
private void ParseRuntimeFunctions(bool[] isEntryPoint, int runtimeFunctionOffset, int runtimeFunctionSize)
{
int curOffset = 0;
foreach (R2RMethod method in R2RMethods)
{
int runtimeFunctionId = method.EntryPointRuntimeFunctionId;
if (runtimeFunctionId == -1)
{
continue;
}
curOffset = runtimeFunctionOffset + runtimeFunctionId * runtimeFunctionSize;
BaseGcInfo gcInfo = null;
int codeOffset = 0;
do
{
int startRva = NativeReader.ReadInt32(Image, ref curOffset);
int endRva = -1;
if (Machine == Machine.Amd64)
{
endRva = NativeReader.ReadInt32(Image, ref curOffset);
}
int unwindRva = NativeReader.ReadInt32(Image, ref curOffset);
int unwindOffset = GetOffset(unwindRva);
BaseUnwindInfo unwindInfo = null;
if (Machine == Machine.Amd64)
{
unwindInfo = new Amd64.UnwindInfo(Image, unwindOffset);
if (isEntryPoint[runtimeFunctionId])
{
gcInfo = new Amd64.GcInfo(Image, unwindOffset + unwindInfo.Size, Machine, R2RHeader.MajorVersion);
}
}
else if (Machine == Machine.I386)
{
unwindInfo = new x86.UnwindInfo(Image, unwindOffset);
if (isEntryPoint[runtimeFunctionId])
{
gcInfo = new x86.GcInfo(Image, unwindOffset, Machine, R2RHeader.MajorVersion);
}
}
else if (Machine == Machine.ArmThumb2)
{
unwindInfo = new Arm.UnwindInfo(Image, unwindOffset);
if (isEntryPoint[runtimeFunctionId])
{
gcInfo = new Amd64.GcInfo(Image, unwindOffset + unwindInfo.Size, Machine, R2RHeader.MajorVersion); // Arm and Arm64 use the same GcInfo format as x64
}
}
else if (Machine == Machine.Arm64)
{
unwindInfo = new Arm64.UnwindInfo(Image, unwindOffset);
if (isEntryPoint[runtimeFunctionId])
{
gcInfo = new Amd64.GcInfo(Image, unwindOffset + unwindInfo.Size, Machine, R2RHeader.MajorVersion);
}
}
EHInfo ehInfo = null;
EHInfoLocation ehInfoLocation;
if (EHLookupTable != null && EHLookupTable.RuntimeFunctionToEHInfoMap.TryGetValue(startRva, out ehInfoLocation))
{
ehInfo = new EHInfo(this, ehInfoLocation.EHInfoRVA, startRva, GetOffset(ehInfoLocation.EHInfoRVA), ehInfoLocation.ClauseCount);
}
RuntimeFunction rtf = new RuntimeFunction(
runtimeFunctionId,
startRva,
endRva,
unwindRva,
codeOffset,
method,
unwindInfo,
gcInfo,
ehInfo,
_runtimeFunctionToDebugInfo.GetValueOrDefault(runtimeFunctionId));
method.RuntimeFunctions.Add(rtf);
runtimeFunctionId++;
codeOffset += rtf.Size;
}while (runtimeFunctionId < isEntryPoint.Length && !isEntryPoint[runtimeFunctionId]);
}
}
