/// <summary>
/// Deserializes an entire trace entry from the given binary reader.
/// </summary>
/// <typeparam name="T">Trace entry type.</typeparam>
/// <param name="reader">Binary reader containing the trace data.</param>
/// <returns></returns>
public static TraceEntry DeserializeNextEntry(FastBinaryReader reader)
{
// Read depending on type
TraceEntryTypes entryType = (TraceEntryTypes)reader.ReadByte();
switch (entryType)
{
case TraceEntryTypes.ImageMemoryAccess:
return(Deserialize <Microwalk.TraceEntryTypes.ImageMemoryAccess>(reader));
case TraceEntryTypes.HeapMemoryAccess:
return(Deserialize <Microwalk.TraceEntryTypes.HeapMemoryAccess>(reader));
case TraceEntryTypes.StackMemoryAccess:
return(Deserialize <Microwalk.TraceEntryTypes.StackMemoryAccess>(reader));
case TraceEntryTypes.Allocation:
return(Deserialize <Microwalk.TraceEntryTypes.Allocation>(reader));
case TraceEntryTypes.Free:
return(Deserialize <Microwalk.TraceEntryTypes.Free>(reader));
case TraceEntryTypes.Branch:
return(Deserialize <Microwalk.TraceEntryTypes.Branch>(reader));
default:
throw new TraceFormatException($"Unknown trace entry type.");
}
}
/// <summary>
/// Reads all entries from the trace file using deferred execution.
/// </summary>
/// <returns></returns>
private IEnumerable <TraceEntry> ReadEntriesLazily()
{
// Read trace entries
_traceFileReader.Position = _headerEndOffset;
for (int i = 0; i < _traceEntryCount; ++i)
{
// Read depending on type
TraceEntryTypes entryType = (TraceEntryTypes)_traceFileReader.ReadByte();
switch (entryType)
{
case TraceEntryTypes.Allocation:
{
AllocationEntry entry = new AllocationEntry();
entry.Size = _traceFileReader.ReadUInt32();
entry.Address = _traceFileReader.ReadUInt64();
yield return(entry);
break;
}
case TraceEntryTypes.Free:
{
FreeEntry entry = new FreeEntry();
entry.Address = _traceFileReader.ReadUInt64();
yield return(entry);
break;
}
case TraceEntryTypes.ImageMemoryRead:
{
ImageMemoryReadEntry entry = new ImageMemoryReadEntry();
entry.InstructionImageId = _imageIdLookup[_traceFileReader.ReadByte()];
entry.InstructionImageName = _knownImages[entry.InstructionImageId];
entry.InstructionAddress = _traceFileReader.ReadUInt32();
entry.MemoryImageId = _imageIdLookup[_traceFileReader.ReadByte()];
entry.MemoryImageName = _knownImages[entry.MemoryImageId];
entry.MemoryAddress = (uint)(_traceFileReader.ReadUInt32() & _alignmentOperand);
yield return(entry);
break;
}
case TraceEntryTypes.ImageMemoryWrite:
{
ImageMemoryWriteEntry entry = new ImageMemoryWriteEntry();
entry.InstructionImageId = _imageIdLookup[_traceFileReader.ReadByte()];
entry.InstructionImageName = _knownImages[entry.InstructionImageId];
entry.InstructionAddress = _traceFileReader.ReadUInt32();
entry.MemoryImageId = _imageIdLookup[_traceFileReader.ReadByte()];
entry.MemoryImageName = _knownImages[entry.MemoryImageId];
entry.MemoryAddress = (uint)(_traceFileReader.ReadUInt32() & _alignmentOperand);
yield return(entry);
break;
}
case TraceEntryTypes.AllocMemoryRead:
{
AllocMemoryReadEntry entry = new AllocMemoryReadEntry();
entry.ImageId = _imageIdLookup[_traceFileReader.ReadByte()];
entry.ImageName = _knownImages[entry.ImageId];
entry.InstructionAddress = _traceFileReader.ReadUInt32();
entry.MemoryAddress = _traceFileReader.ReadUInt64() & _alignmentOperand;
yield return(entry);
break;
}
case TraceEntryTypes.AllocMemoryWrite:
{
AllocMemoryWriteEntry entry = new AllocMemoryWriteEntry();
entry.ImageId = _imageIdLookup[_traceFileReader.ReadByte()];
entry.ImageName = _knownImages[entry.ImageId];
entry.InstructionAddress = _traceFileReader.ReadUInt32();
entry.MemoryAddress = _traceFileReader.ReadUInt64() & _alignmentOperand;
yield return(entry);
break;
}
case TraceEntryTypes.Branch:
{
BranchEntry entry = new BranchEntry();
entry.SourceImageId = _imageIdLookup[_traceFileReader.ReadByte()];
entry.SourceImageName = _knownImages[entry.SourceImageId];
entry.SourceInstructionAddress = _traceFileReader.ReadUInt32();
entry.DestinationImageId = _imageIdLookup[_traceFileReader.ReadByte()];
entry.DestinationImageName = _knownImages[entry.DestinationImageId];
entry.DestinationInstructionAddress = _traceFileReader.ReadUInt32();
entry.Taken = _traceFileReader.ReadBoolean();
entry.BranchType = (BranchTypes)_traceFileReader.ReadByte();
yield return(entry);
break;
}
}
}
}
