public UnwindInfo(byte[] image, int offset)
{
byte versionAndFlags = NativeReader.ReadByte(image, ref offset);
Version = (byte)(versionAndFlags & 7);
Flags = (byte)(versionAndFlags >> 3);
SizeOfProlog = NativeReader.ReadByte(image, ref offset);
CountOfUnwindCodes = NativeReader.ReadByte(image, ref offset);
byte frameRegisterAndOffset = NativeReader.ReadByte(image, ref offset);
FrameRegister = (byte)(frameRegisterAndOffset & 15);
FrameOffset = (byte)(frameRegisterAndOffset >> 4);
UnwindCode = new UnwindCode[CountOfUnwindCodes];
for (int i = 0; i < CountOfUnwindCodes; i++)
{
UnwindCode[i] = new UnwindCode(image, ref offset);
}
PersonalityRoutineRVA = NativeReader.ReadUInt32(image, ref offset);
Size = _offsetofUnwindCode + CountOfUnwindCodes * _sizeofUnwindCode;
int alignmentPad = ((Size + sizeof(int) - 1) & ~(sizeof(int) - 1)) - Size;
Size += (alignmentPad + sizeof(uint));
}
public static void WriteTo(this RuntimeFunction theThis, TextWriter writer, DumpOptions options)
{
if (!options.Naked)
{
writer.WriteLine($"Id: {theThis.Id}");
writer.WriteLine($"StartAddress: 0x{theThis.StartAddress:X8}");
}
if (theThis.Size == -1)
{
writer.WriteLine("Size: Unavailable");
}
else
{
writer.WriteLine($"Size: {theThis.Size} bytes");
}
if (!options.Naked)
{
writer.WriteLine($"UnwindRVA: 0x{theThis.UnwindRVA:X8}");
}
if (theThis.UnwindInfo is ILCompiler.Reflection.ReadyToRun.Amd64.UnwindInfo amd64UnwindInfo)
{
string parsedFlags = "";
if ((amd64UnwindInfo.Flags & (int)ILCompiler.Reflection.ReadyToRun.Amd64.UnwindFlags.UNW_FLAG_EHANDLER) != 0)
{
parsedFlags += " EHANDLER";
}
if ((amd64UnwindInfo.Flags & (int)ILCompiler.Reflection.ReadyToRun.Amd64.UnwindFlags.UNW_FLAG_UHANDLER) != 0)
{
parsedFlags += " UHANDLER";
}
if ((amd64UnwindInfo.Flags & (int)ILCompiler.Reflection.ReadyToRun.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($"FrameRegister: {((amd64UnwindInfo.FrameRegister == 0) ? "None" : amd64UnwindInfo.FrameRegister.ToString())}");
writer.WriteLine($"FrameOffset: 0x{amd64UnwindInfo.FrameOffset}");
if (!options.Naked)
{
writer.WriteLine($"PersonalityRVA: 0x{amd64UnwindInfo.PersonalityRoutineRVA:X4}");
}
for (int uwcIndex = 0; uwcIndex < amd64UnwindInfo.UnwindCodes.Count; uwcIndex++)
{
UnwindCode unwindCode = amd64UnwindInfo.UnwindCodes[uwcIndex];
writer.Write($"UnwindCode[{uwcIndex}]: ");
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();
uwcIndex++;
}
}
writer.WriteLine();
if (theThis.EHInfo != null)
{
writer.WriteLine($@"EH info @ {theThis.EHInfo.RelativeVirtualAddress:X4}, #clauses = {theThis.EHInfo.EHClauses.Count}");
theThis.EHInfo.WriteTo(writer);
writer.WriteLine();
}
if (theThis.DebugInfo != null)
{
theThis.DebugInfo.WriteTo(writer, options);
}
}