/// <summary>
/// Extracts the method signature from the metadata by rid
/// </summary>
public R2RMethod(int index, MetadataReader mdReader, uint rid, int entryPointId, CorElementType[] instanceArgs, uint[] tok, FixupCell[] fixups)
{
Index = index;
Token = _mdtMethodDef | rid;
Rid = rid;
EntryPointRuntimeFunctionId = entryPointId;
_mdReader = mdReader;
RuntimeFunctions = new List <RuntimeFunction>();
// get the method signature from the MethodDefhandle
MethodDefinitionHandle methodDefHandle = MetadataTokens.MethodDefinitionHandle((int)rid);
_methodDef = mdReader.GetMethodDefinition(methodDefHandle);
Name = mdReader.GetString(_methodDef.Name);
BlobReader signatureReader = mdReader.GetBlobReader(_methodDef.Signature);
TypeDefinitionHandle declaringTypeHandle = _methodDef.GetDeclaringType();
DeclaringType = MetadataNameFormatter.FormatHandle(mdReader, declaringTypeHandle);
SignatureHeader signatureHeader = signatureReader.ReadSignatureHeader();
IsGeneric = signatureHeader.IsGeneric;
GenericParameterHandleCollection genericParams = _methodDef.GetGenericParameters();
_genericParamInstanceMap = new Dictionary <string, string>();
int argCount = signatureReader.ReadCompressedInteger();
if (IsGeneric)
{
argCount = signatureReader.ReadCompressedInteger();
}
Fixups = fixups;
DisassemblingTypeProvider provider = new DisassemblingTypeProvider();
if (IsGeneric && instanceArgs != null && tok != null)
{
InitGenericInstances(genericParams, instanceArgs, tok);
}
DisassemblingGenericContext genericContext = new DisassemblingGenericContext(new string[0], _genericParamInstanceMap.Values.ToArray());
Signature = _methodDef.DecodeSignature(provider, genericContext);
SignatureString = GetSignature();
}
/// <summary>
/// Read the EH clause from a given file offset in the PE image.
/// </summary>
/// <param name="reader">R2R image reader<param>
/// <param name="offset">Offset of the EH clause in the image</param>
public EHClause(R2RReader reader, int offset)
{
Flags = (CorExceptionFlag)BitConverter.ToUInt32(reader.Image, offset + 0 * sizeof(uint));
TryOffset = BitConverter.ToUInt32(reader.Image, offset + 1 * sizeof(uint));
TryEnd = BitConverter.ToUInt32(reader.Image, offset + 2 * sizeof(uint));
HandlerOffset = BitConverter.ToUInt32(reader.Image, offset + 3 * sizeof(uint));
HandlerEnd = BitConverter.ToUInt32(reader.Image, offset + 4 * sizeof(uint));
ClassTokenOrFilterOffset = BitConverter.ToUInt32(reader.Image, offset + 5 * sizeof(uint));
if ((Flags & CorExceptionFlag.COR_ILEXCEPTION_CLAUSE_KIND_MASK) == CorExceptionFlag.COR_ILEXCEPTION_CLAUSE_NONE)
{
ClassName = MetadataNameFormatter.FormatHandle(reader.MetadataReader, MetadataTokens.Handle((int)ClassTokenOrFilterOffset));
}
}
/// <summary>
/// Iterates through a native hashtable to get all RIDs
/// </summary>
private void ParseAvailableTypes()
{
if (!R2RHeader.Sections.ContainsKey(R2RSection.SectionType.READYTORUN_SECTION_AVAILABLE_TYPES))
{
return;
}
HashSet <uint> added = new HashSet <uint>();
R2RSection availableTypesSection = R2RHeader.Sections[R2RSection.SectionType.READYTORUN_SECTION_AVAILABLE_TYPES];
int availableTypesOffset = GetOffset(availableTypesSection.RelativeVirtualAddress);
NativeParser parser = new NativeParser(Image, (uint)availableTypesOffset);
NativeHashtable availableTypes = new NativeHashtable(Image, parser, (uint)(availableTypesOffset + availableTypesSection.Size));
NativeHashtable.AllEntriesEnumerator allEntriesEnum = availableTypes.EnumerateAllEntries();
NativeParser curParser = allEntriesEnum.GetNext();
while (!curParser.IsNull())
{
uint rid = curParser.GetUnsigned();
rid = rid >> 1;
if (added.Contains(rid))
{
continue;
}
TypeDefinitionHandle typeDefHandle = MetadataTokens.TypeDefinitionHandle((int)rid);
string typeDefName = MetadataNameFormatter.FormatHandle(MetadataReader, typeDefHandle);
ExportedTypeHandle exportedTypeHandle = MetadataTokens.ExportedTypeHandle((int)rid);
string exportedTypeName = GetExportedTypeFullName(MetadataReader, exportedTypeHandle);
if (typeDefName == null && exportedTypeName == null)
{
R2RDump.WriteWarning($"AvailableType with rid {rid} is not a TypeDef or ExportedType");
}
if (typeDefName != null)
{
AvailableTypes.Add(typeDefName);
added.Add(rid);
}
if (exportedTypeName != null)
{
AvailableTypes.Add("exported " + exportedTypeName);
added.Add(rid);
}
curParser = allEntriesEnum.GetNext();
}
}
/// <summary>
/// Iterates through a native hashtable to get all RIDs
/// </summary>
private void ParseAvailableTypes()
{
if (!R2RHeader.Sections.ContainsKey(R2RSection.SectionType.READYTORUN_SECTION_AVAILABLE_TYPES))
{
return;
}
R2RSection availableTypesSection = R2RHeader.Sections[R2RSection.SectionType.READYTORUN_SECTION_AVAILABLE_TYPES];
int availableTypesOffset = GetOffset(availableTypesSection.RelativeVirtualAddress);
NativeParser parser = new NativeParser(Image, (uint)availableTypesOffset);
NativeHashtable availableTypes = new NativeHashtable(Image, parser, (uint)(availableTypesOffset + availableTypesSection.Size));
NativeHashtable.AllEntriesEnumerator allEntriesEnum = availableTypes.EnumerateAllEntries();
NativeParser curParser = allEntriesEnum.GetNext();
while (!curParser.IsNull())
{
uint rid = curParser.GetUnsigned();
bool isExportedType = (rid & 1) != 0;
rid = rid >> 1;
if (isExportedType)
{
ExportedTypeHandle exportedTypeHandle = MetadataTokens.ExportedTypeHandle((int)rid);
string exportedTypeName = GetExportedTypeFullName(MetadataReader, exportedTypeHandle);
AvailableTypes.Add("exported " + exportedTypeName);
}
else
{
TypeDefinitionHandle typeDefHandle = MetadataTokens.TypeDefinitionHandle((int)rid);
string typeDefName = MetadataNameFormatter.FormatHandle(MetadataReader, typeDefHandle);
AvailableTypes.Add(typeDefName);
}
curParser = allEntriesEnum.GetNext();
}
}
/// <summary>
/// Extracts the method signature from the metadata by rid
/// </summary>
public R2RMethod(
int index,
R2RReader r2rReader,
EntityHandle methodHandle,
int entryPointId,
string owningType,
string constrainedType,
string[] instanceArgs,
FixupCell[] fixups)
{
Index = index;
MethodHandle = methodHandle;
EntryPointRuntimeFunctionId = entryPointId;
R2RReader = r2rReader;
RuntimeFunctions = new List <RuntimeFunction>();
EntityHandle owningTypeHandle;
GenericParameterHandleCollection genericParams = default(GenericParameterHandleCollection);
DisassemblingGenericContext genericContext = new DisassemblingGenericContext(typeParameters: Array.Empty <string>(), methodParameters: instanceArgs);
DisassemblingTypeProvider typeProvider = new DisassemblingTypeProvider();
// get the method signature from the method handle
switch (MethodHandle.Kind)
{
case HandleKind.MethodDefinition:
{
MethodDefinition methodDef = R2RReader.MetadataReader.GetMethodDefinition((MethodDefinitionHandle)MethodHandle);
Name = R2RReader.MetadataReader.GetString(methodDef.Name);
Signature = methodDef.DecodeSignature <string, DisassemblingGenericContext>(typeProvider, genericContext);
owningTypeHandle = methodDef.GetDeclaringType();
genericParams = methodDef.GetGenericParameters();
}
break;
case HandleKind.MemberReference:
{
MemberReference memberRef = R2RReader.MetadataReader.GetMemberReference((MemberReferenceHandle)MethodHandle);
Name = R2RReader.MetadataReader.GetString(memberRef.Name);
Signature = memberRef.DecodeMethodSignature <string, DisassemblingGenericContext>(typeProvider, genericContext);
owningTypeHandle = memberRef.Parent;
}
break;
default:
throw new NotImplementedException();
}
if (owningType != null)
{
DeclaringType = owningType;
}
else
{
DeclaringType = MetadataNameFormatter.FormatHandle(R2RReader.MetadataReader, owningTypeHandle);
}
Fixups = fixups;
StringBuilder sb = new StringBuilder();
sb.Append(Signature.ReturnType);
sb.Append(" ");
sb.Append(DeclaringType);
sb.Append(".");
sb.Append(Name);
if (Signature.GenericParameterCount != 0)
{
sb.Append("<");
for (int i = 0; i < Signature.GenericParameterCount; i++)
{
if (i > 0)
{
sb.Append(", ");
}
if (instanceArgs != null && instanceArgs.Length > i)
{
sb.Append(instanceArgs[i]);
}
else
{
sb.Append("!");
sb.Append(i);
}
}
sb.Append(">");
}
sb.Append("(");
for (int i = 0; i < Signature.ParameterTypes.Length; i++)
{
if (i > 0)
{
sb.Append(", ");
}
sb.AppendFormat($"{Signature.ParameterTypes[i]}");
}
sb.Append(")");
SignatureString = sb.ToString();
}
/// <summary>
/// based on <a href="https://github.com/dotnet/coreclr/blob/master/src/zap/zapimport.cpp">ZapImportSectionsTable::Save</a>
/// </summary>
private void ParseImportSections()
{
if (!R2RHeader.Sections.ContainsKey(R2RSection.SectionType.READYTORUN_SECTION_IMPORT_SECTIONS))
{
return;
}
R2RSection importSectionsSection = R2RHeader.Sections[R2RSection.SectionType.READYTORUN_SECTION_IMPORT_SECTIONS];
int offset = GetOffset(importSectionsSection.RelativeVirtualAddress);
int endOffset = offset + importSectionsSection.Size;
while (offset < endOffset)
{
int rva = NativeReader.ReadInt32(Image, ref offset);
int sectionOffset = GetOffset(rva);
int startOffset = sectionOffset;
int size = NativeReader.ReadInt32(Image, ref offset);
CorCompileImportFlags flags = (CorCompileImportFlags)NativeReader.ReadUInt16(Image, ref offset);
byte type = NativeReader.ReadByte(Image, ref offset);
byte entrySize = NativeReader.ReadByte(Image, ref offset);
if (entrySize == 0)
{
switch (Machine)
{
case Machine.I386:
case Machine.ArmThumb2:
entrySize = 4;
break;
case Machine.Amd64:
case Machine.IA64:
case Machine.Arm64:
entrySize = 8;
break;
default:
throw new NotImplementedException(Machine.ToString());
}
}
int entryCount = 0;
if (entrySize != 0)
{
entryCount = size / entrySize;
}
int signatureRVA = NativeReader.ReadInt32(Image, ref offset);
int signatureOffset = 0;
if (signatureRVA != 0)
{
signatureOffset = GetOffset(signatureRVA);
}
List <R2RImportSection.ImportSectionEntry> entries = new List <R2RImportSection.ImportSectionEntry>();
for (int i = 0; i < entryCount; i++)
{
int entryOffset = sectionOffset - startOffset;
long section = NativeReader.ReadInt64(Image, ref sectionOffset);
uint sigRva = NativeReader.ReadUInt32(Image, ref signatureOffset);
int sigOffset = GetOffset((int)sigRva);
string cellName = MetadataNameFormatter.FormatSignature(this, sigOffset);
entries.Add(new R2RImportSection.ImportSectionEntry(entries.Count, entryOffset, section, sigRva, cellName));
ImportCellNames.Add(rva + entrySize * i, cellName);
}
int auxDataRVA = NativeReader.ReadInt32(Image, ref offset);
int auxDataOffset = 0;
if (auxDataRVA != 0)
{
auxDataOffset = GetOffset(auxDataRVA);
}
ImportSections.Add(new R2RImportSection(ImportSections.Count, Image, rva, size, flags, type, entrySize, signatureRVA, entries, auxDataRVA, auxDataOffset, Machine, R2RHeader.MajorVersion));
}
}
public virtual string GetTypeFromSpecification(MetadataReader reader, DisassemblingGenericContext genericContext, TypeSpecificationHandle handle, byte rawTypeKind = 0)
{
return(MetadataNameFormatter.FormatHandle(reader, handle));
}
public virtual string GetTypeFromReference(MetadataReader reader, TypeReferenceHandle handle, byte rawTypeKind = 0)
{
return(MetadataNameFormatter.FormatHandle(reader, handle));
}
public virtual string GetTypeFromDefinition(MetadataReader reader, TypeDefinitionHandle handle, byte rawTypeKind = 0)
{
return(MetadataNameFormatter.FormatHandle(reader, handle));
}
public virtual string GetTypeFromHandle(MetadataReader reader, DisassemblingGenericContext genericContext, EntityHandle handle)
{
return(MetadataNameFormatter.FormatHandle(reader, handle));
}
/// <summary>
/// Read a memberRef token from the signature and output the corresponding object to the builder.
/// </summary>
/// <param name="builder">Output string builder</param>
/// <param name="owningTypeOverride">Explicit owning type override</param>
private void ParseMethodRefToken(StringBuilder builder, string owningTypeOverride)
{
uint methodRefToken = ReadUInt() | (uint)CorTokenType.mdtMemberRef;
builder.Append(MetadataNameFormatter.FormatHandle(_metadataReader, MetadataTokens.Handle((int)methodRefToken), namespaceQualified: false, owningTypeOverride: owningTypeOverride));
}
private void ParseTypeToken(StringBuilder builder)
{
uint token = ReadToken();
builder.Append(MetadataNameFormatter.FormatHandle(_metadataReader, MetadataTokens.Handle((int)token)));
}
/// <summary>
/// Construct the textual representation of a given metadata handle.
/// </summary>
/// <param name="metadataReader">Metadata reader corresponding to the handle</param>
/// <param name="handle">Metadata handle to parse</param>
/// <param name="namespaceQualified">Include namespace in type names</param>
public static string FormatHandle(MetadataReader metadataReader, Handle handle, bool namespaceQualified = true, string owningTypeOverride = null)
{
MetadataNameFormatter formatter = new MetadataNameFormatter(metadataReader);
return(formatter.EmitHandleName(handle, namespaceQualified, owningTypeOverride));
}
/// <summary>
/// Read a memberRef token from the signature and output the corresponding object to the builder.
/// </summary>
/// <param name="builder">Output string builder</param>
private void ParseMethodRefToken(StringBuilder builder)
{
uint methodRefToken = ReadUInt() | (uint)CorTokenType.mdtMemberRef;
builder.Append(MetadataNameFormatter.FormatHandle(_metadataReader, MetadataTokens.Handle((int)methodRefToken)));
}
/// <summary>
/// Construct the textual representation of a given metadata handle.
/// </summary>
/// <param name="metadataReader">Metadata reader corresponding to the handle</param>
/// <param name="handle">Metadata handle to parse</param>
/// <param name="namespaceQualified">Include namespace in type names</param>
public static string FormatHandle(MetadataReader metadataReader, Handle handle, bool namespaceQualified = true)
{
MetadataNameFormatter formatter = new MetadataNameFormatter(metadataReader);
return(formatter.EmitHandleName(handle, namespaceQualified));
}
