public unsafe static string GetCodeBlock(IntPtr Disasm, RuntimeFunction rtf, int imageOffset, byte[] image)
{
StringBuilder sb = new StringBuilder();
int rtfOffset = 0;
int codeOffset = rtf.CodeOffset;
Dictionary <int, GcInfo.GcTransition> transitions = rtf.Method.GcInfo.Transitions;
GcSlotTable slotTable = rtf.Method.GcInfo.SlotTable;
while (rtfOffset < rtf.Size)
{
int instrSize = 1;
fixed(byte *p = image)
{
IntPtr ptr = (IntPtr)(p + imageOffset + rtfOffset);
instrSize = DumpInstruction(Disasm, (ulong)(rtf.StartAddress + rtfOffset), ptr, rtf.Size);
}
IntPtr pBuffer = GetOutputBuffer();
string instr = Marshal.PtrToStringAnsi(pBuffer);
sb.Append(instr);
if (transitions.ContainsKey(codeOffset))
{
sb.AppendLine($"\t\t\t\t{transitions[codeOffset].GetSlotState(slotTable)}");
}
ClearOutputBuffer();
rtfOffset += instrSize;
codeOffset += instrSize;
}
return(sb.ToString());
}
public string GetSlotState(GcSlotTable slotTable)
{
GcSlotTable.GcSlot slot = slotTable.GcSlots[SlotId];
string slotStr = "";
if (slot.StackSlot == null)
{
slotStr = Enum.GetName(typeof(Amd64Registers), slot.RegisterNumber);
}
else
{
slotStr = $"sp{slot.StackSlot.SpOffset:+#;-#;+0}";
}
string isLiveStr = "live";
if (!IsLive)
{
isLiveStr = "dead";
}
return($"{slotStr} is {isLiveStr}");
}
internal unsafe override void DumpDisasm(IntPtr Disasm, RuntimeFunction rtf, int imageOffset, byte[] image, XmlNode parentNode = null)
{
int rtfOffset = 0;
int codeOffset = rtf.CodeOffset;
Dictionary <int, GcInfo.GcTransition> transitions = rtf.Method.GcInfo.Transitions;
GcSlotTable slotTable = rtf.Method.GcInfo.SlotTable;
while (rtfOffset < rtf.Size)
{
string instr;
int instrSize = CoreDisTools.GetInstruction(Disasm, rtf, imageOffset, rtfOffset, image, out instr);
_writer.Write(instr);
if (transitions.ContainsKey(codeOffset))
{
_writer.WriteLine($"\t\t\t\t{transitions[codeOffset].GetSlotState(slotTable)}");
}
CoreDisTools.ClearOutputBuffer();
rtfOffset += instrSize;
codeOffset += instrSize;
}
}
public GcInfo(byte[] image, int offset, Machine machine, ushort majorVersion)
{
Offset = offset;
_gcInfoTypes = new GcInfoTypes(machine);
SecurityObjectStackSlot = -1;
GSCookieStackSlot = -1;
PSPSymStackSlot = -1;
SecurityObjectStackSlot = -1;
GenericsInstContextStackSlot = -1;
StackBaseRegister = 0xffffffff;
SizeOfEditAndContinuePreservedArea = 0xffffffff;
ReversePInvokeFrameStackSlot = -1;
Version = ReadyToRunVersionToGcInfoVersion(majorVersion);
int bitOffset = offset * 8;
int startBitOffset = bitOffset;
ParseHeaderFlags(image, ref bitOffset);
if (Version >= MIN_GCINFO_VERSION_WITH_RETURN_KIND) // IsReturnKindAvailable
{
int returnKindBits = (_slimHeader) ? _gcInfoTypes.SIZE_OF_RETURN_KIND_SLIM : _gcInfoTypes.SIZE_OF_RETURN_KIND_FAT;
ReturnKind = (ReturnKinds)NativeReader.ReadBits(image, returnKindBits, ref bitOffset);
}
CodeLength = _gcInfoTypes.DenormalizeCodeLength((int)NativeReader.DecodeVarLengthUnsigned(image, _gcInfoTypes.CODE_LENGTH_ENCBASE, ref bitOffset));
if (_hasGSCookie)
{
uint normPrologSize = NativeReader.DecodeVarLengthUnsigned(image, _gcInfoTypes.NORM_PROLOG_SIZE_ENCBASE, ref bitOffset) + 1;
uint normEpilogSize = NativeReader.DecodeVarLengthUnsigned(image, _gcInfoTypes.NORM_PROLOG_SIZE_ENCBASE, ref bitOffset);
ValidRangeStart = normPrologSize;
ValidRangeEnd = (uint)CodeLength - normEpilogSize;
}
else if (_hasSecurityObject || _hasGenericsInstContext)
{
ValidRangeStart = NativeReader.DecodeVarLengthUnsigned(image, _gcInfoTypes.NORM_PROLOG_SIZE_ENCBASE, ref bitOffset) + 1;
ValidRangeEnd = ValidRangeStart + 1;
}
if (_hasSecurityObject)
{
SecurityObjectStackSlot = _gcInfoTypes.DenormalizeStackSlot(NativeReader.DecodeVarLengthSigned(image, _gcInfoTypes.SECURITY_OBJECT_STACK_SLOT_ENCBASE, ref bitOffset));
}
if (_hasGSCookie)
{
GSCookieStackSlot = _gcInfoTypes.DenormalizeStackSlot(NativeReader.DecodeVarLengthSigned(image, _gcInfoTypes.GS_COOKIE_STACK_SLOT_ENCBASE, ref bitOffset));
}
if (_hasPSPSym)
{
PSPSymStackSlot = _gcInfoTypes.DenormalizeStackSlot(NativeReader.DecodeVarLengthSigned(image, _gcInfoTypes.PSP_SYM_STACK_SLOT_ENCBASE, ref bitOffset));
}
if (_hasGenericsInstContext)
{
GenericsInstContextStackSlot = _gcInfoTypes.DenormalizeStackSlot(NativeReader.DecodeVarLengthSigned(image, _gcInfoTypes.GENERICS_INST_CONTEXT_STACK_SLOT_ENCBASE, ref bitOffset));
}
if (_hasStackBaseRegister && !_slimHeader)
{
StackBaseRegister = _gcInfoTypes.DenormalizeStackBaseRegister(NativeReader.DecodeVarLengthUnsigned(image, _gcInfoTypes.STACK_BASE_REGISTER_ENCBASE, ref bitOffset));
}
if (_hasSizeOfEditAndContinuePreservedArea)
{
SizeOfEditAndContinuePreservedArea = NativeReader.DecodeVarLengthUnsigned(image, _gcInfoTypes.SIZE_OF_EDIT_AND_CONTINUE_PRESERVED_AREA_ENCBASE, ref bitOffset);
}
if (_hasReversePInvokeFrame)
{
ReversePInvokeFrameStackSlot = NativeReader.DecodeVarLengthSigned(image, _gcInfoTypes.REVERSE_PINVOKE_FRAME_ENCBASE, ref bitOffset);
}
// FIXED_STACK_PARAMETER_SCRATCH_AREA (this macro is always defined in _gcInfoTypes.h)
if (!_slimHeader)
{
SizeOfStackOutgoingAndScratchArea = _gcInfoTypes.DenormalizeSizeOfStackArea(NativeReader.DecodeVarLengthUnsigned(image, _gcInfoTypes.SIZE_OF_STACK_AREA_ENCBASE, ref bitOffset));
}
// PARTIALLY_INTERRUPTIBLE_GC_SUPPORTED (this macro is always defined in _gcInfoTypes.h)
NumSafePoints = NativeReader.DecodeVarLengthUnsigned(image, _gcInfoTypes.NUM_SAFE_POINTS_ENCBASE, ref bitOffset);
if (!_slimHeader)
{
NumInterruptibleRanges = NativeReader.DecodeVarLengthUnsigned(image, _gcInfoTypes.NUM_INTERRUPTIBLE_RANGES_ENCBASE, ref bitOffset);
}
// PARTIALLY_INTERRUPTIBLE_GC_SUPPORTED (this macro is always defined in _gcInfoTypes.h)
SafePointOffsets = EnumerateSafePoints(image, ref bitOffset);
uint numBitsPerOffset = GcInfoTypes.CeilOfLog2(CodeLength);
bitOffset += (int)(NumSafePoints * numBitsPerOffset);
InterruptibleRanges = EnumerateInterruptibleRanges(image, _gcInfoTypes.INTERRUPTIBLE_RANGE_DELTA1_ENCBASE, _gcInfoTypes.INTERRUPTIBLE_RANGE_DELTA2_ENCBASE, ref bitOffset);
SlotTable = new GcSlotTable(image, machine, _gcInfoTypes, ref bitOffset);
Transitions = GetTranstions(image, ref bitOffset);
Size = bitOffset - startBitOffset;
_machine = machine;
}