private void DecorateDebugInfo(Instruction instr, DebugInfoHelper debugRecords, ulong baseInstrIP)
{
if (debugRecords != null)
{
InstructionInfoFactory factory = new InstructionInfoFactory();
InstructionInfo info = factory.GetInfo(instr);
ulong codeOffset = instr.IP - baseInstrIP;
debugRecords.Update(codeOffset);
Variable variable = null;
foreach (UsedMemory usedMemInfo in info.GetUsedMemory())
{
string baseRegister = usedMemInfo.Base.ToString();
int displacement;
unchecked
{ displacement = (int)usedMemInfo.Displacement; }
Dictionary <int, Variable> offsetToVariableMap;
if (debugRecords.registerRelativeVariables.TryGetValue(usedMemInfo.Base.ToString(), out offsetToVariableMap))
{
if (offsetToVariableMap.TryGetValue(displacement, out variable))
{
output.Write($"; [{usedMemInfo.Base.ToString().ToLower()}{(displacement < 0 ? '-' : '+')}{Math.Abs(displacement):X}h] = {variable.Type} {variable.Index}");
}
}
}
foreach (UsedRegister usedMemInfo in info.GetUsedRegisters())
{
if (debugRecords.registerVariables.TryGetValue(usedMemInfo.Register.ToString(), out variable))
{
output.Write($"; {usedMemInfo.Register.ToString().ToLower()} = {variable.Type} {variable.Index}");
}
}
}
}
private void DecorateDebugInfo(Instruction instr, DebugInfoHelper debugRecords, ulong baseInstrIP)
{
if (debugRecords != null)
{
HashSet <Variable> variables;
InstructionInfoFactory factory = new InstructionInfoFactory();
InstructionInfo info = factory.GetInfo(instr);
ulong codeOffset = instr.IP - baseInstrIP;
debugRecords.Update(codeOffset);
foreach (UsedMemory usedMemInfo in info.GetUsedMemory())
{
string baseRegister = usedMemInfo.Base.ToString();
int displacement;
unchecked
{ displacement = (int)usedMemInfo.Displacement; }
Dictionary <int, HashSet <Variable> > offsetToVariableMap;
if (debugRecords.registerRelativeVariables.TryGetValue(usedMemInfo.Base.ToString(), out offsetToVariableMap))
{
if (offsetToVariableMap.TryGetValue(displacement, out variables))
{
output.Write($";");
foreach (Variable variable in variables)
{
output.Write($" [{usedMemInfo.Base.ToString().ToLower()}{(displacement < 0 ? '-' : '+')}{Math.Abs(displacement):X}h] = {variable.Type} {variable.Index}");
}
}
}
}
foreach (UsedRegister usedMemInfo in info.GetUsedRegisters())
{
// TODO, if the code is accessing EAX but the debug info maps to RAX, then this match is going to fail.
if (debugRecords.registerVariables.TryGetValue(usedMemInfo.Register.ToString(), out variables))
{
output.Write($";");
foreach (Variable variable in variables)
{
output.Write($" {usedMemInfo.Register.ToString().ToLower()} = {variable.Type} {variable.Index}");
}
}
}
}
}
public void Disassemble(PEFile currentFile, int bitness, ulong address, bool showMetadataTokens, bool showMetadataTokensInBase10)
{
// TODO: Decorate the disassembly with GCInfo
ReadyToRunMethod readyToRunMethod = runtimeFunction.Method;
WriteCommentLine(readyToRunMethod.SignatureString);
Dictionary <ulong, UnwindCode> unwindInfo = null;
if (ReadyToRunOptions.GetIsShowUnwindInfo(null) && bitness == 64)
{
unwindInfo = WriteUnwindInfo();
}
bool isShowDebugInfo = ReadyToRunOptions.GetIsShowDebugInfo(null);
DebugInfoHelper debugInfo = null;
if (isShowDebugInfo)
{
debugInfo = WriteDebugInfo();
}
byte[] codeBytes = new byte[runtimeFunction.Size];
for (int i = 0; i < runtimeFunction.Size; i++)
{
codeBytes[i] = reader.Image[reader.GetOffset(runtimeFunction.StartAddress) + i];
}
var codeReader = new ByteArrayCodeReader(codeBytes);
var decoder = Decoder.Create(bitness, codeReader);
decoder.IP = address;
ulong endRip = decoder.IP + (uint)codeBytes.Length;
var instructions = new InstructionList();
while (decoder.IP < endRip)
{
decoder.Decode(out instructions.AllocUninitializedElement());
}
string disassemblyFormat = ReadyToRunOptions.GetDisassemblyFormat(null);
Formatter formatter = null;
if (disassemblyFormat.Equals(ReadyToRunOptions.intel))
{
formatter = new NasmFormatter();
}
else
{
Debug.Assert(disassemblyFormat.Equals(ReadyToRunOptions.gas));
formatter = new GasFormatter();
}
formatter.Options.DigitSeparator = "`";
formatter.Options.FirstOperandCharIndex = 10;
var tempOutput = new StringOutput();
ulong baseInstrIP = instructions[0].IP;
foreach (var instr in instructions)
{
int byteBaseIndex = (int)(instr.IP - address);
if (isShowDebugInfo && runtimeFunction.DebugInfo != null)
{
foreach (var bound in runtimeFunction.DebugInfo.BoundsList)
{
if (bound.NativeOffset == byteBaseIndex)
{
if (bound.ILOffset == (uint)DebugInfoBoundsType.Prolog)
{
WriteCommentLine("Prolog");
}
else if (bound.ILOffset == (uint)DebugInfoBoundsType.Epilog)
{
WriteCommentLine("Epilog");
}
else
{
WriteCommentLine($"IL_{bound.ILOffset:x4}");
}
}
}
}
formatter.Format(instr, tempOutput);
output.Write(instr.IP.ToString("X16"));
output.Write(" ");
int instrLen = instr.Length;
for (int i = 0; i < instrLen; i++)
{
output.Write(codeBytes[byteBaseIndex + i].ToString("X2"));
}
int missingBytes = 10 - instrLen;
for (int i = 0; i < missingBytes; i++)
{
output.Write(" ");
}
output.Write(" ");
output.Write(tempOutput.ToStringAndReset());
DecorateUnwindInfo(unwindInfo, baseInstrIP, instr);
DecorateDebugInfo(instr, debugInfo, baseInstrIP);
DecorateCallSite(currentFile, showMetadataTokens, showMetadataTokensInBase10, instr);
}
output.WriteLine();
}
