/// <summary>
/// Parse a single method def entrypoint section. For composite R2R images, this method is called multiple times
/// are method entrypoints are stored separately for each component assembly of the composite R2R executable.
/// </summary>
/// <param name="section">Method entrypoint section to parse</param>
/// <param name="metadataReader">ECMA metadata reader representing this method entrypoint section</param>
/// <param name="isEntryPoint">Set to true for each runtime function index representing a method entrypoint</param>
private void ParseMethodDefEntrypointsSectionCustom <TType, TMethod, TGenericContext>(IR2RSignatureTypeProvider <TType, TMethod, TGenericContext> provider, Dictionary <TMethod, ReadyToRunMethod> foundMethods, ReadyToRunSection section, IAssemblyMetadata metadataReader)
{
int methodDefEntryPointsOffset = GetOffset(section.RelativeVirtualAddress);
NativeArray methodEntryPoints = new NativeArray(Image, (uint)methodDefEntryPointsOffset);
uint nMethodEntryPoints = methodEntryPoints.GetCount();
for (uint rid = 1; rid <= nMethodEntryPoints; rid++)
{
int offset = 0;
if (methodEntryPoints.TryGetAt(Image, rid - 1, ref offset))
{
EntityHandle methodHandle = MetadataTokens.MethodDefinitionHandle((int)rid);
int runtimeFunctionId;
int? fixupOffset;
GetRuntimeFunctionIndexFromOffset(offset, out runtimeFunctionId, out fixupOffset);
ReadyToRunMethod r2rMethod = _runtimeFunctionToMethod[runtimeFunctionId];
var customMethod = provider.GetMethodFromMethodDef(metadataReader.MetadataReader, MetadataTokens.MethodDefinitionHandle((int)rid), default(TType));
if (!Object.ReferenceEquals(customMethod, null) && !foundMethods.ContainsKey(customMethod))
{
foundMethods.Add(customMethod, r2rMethod);
}
}
}
}
/// <summary>
/// Initialize generic method instances with argument types and runtime function indices from InstanceMethodEntrypoints
/// </summary>
private void ParseInstanceMethodEntrypointsCustom <TType, TMethod, TGenericContext>(IR2RSignatureTypeProvider <TType, TMethod, TGenericContext> provider, Dictionary <TMethod, ReadyToRunMethod> foundMethods)
{
if (!ReadyToRunHeader.Sections.TryGetValue(ReadyToRunSectionType.InstanceMethodEntryPoints, out ReadyToRunSection instMethodEntryPointSection))
{
return;
}
int instMethodEntryPointsOffset = GetOffset(instMethodEntryPointSection.RelativeVirtualAddress);
NativeParser parser = new NativeParser(Image, (uint)instMethodEntryPointsOffset);
NativeHashtable instMethodEntryPoints = new NativeHashtable(Image, parser, (uint)(instMethodEntryPointsOffset + instMethodEntryPointSection.Size));
NativeHashtable.AllEntriesEnumerator allEntriesEnum = instMethodEntryPoints.EnumerateAllEntries();
NativeParser curParser = allEntriesEnum.GetNext();
while (!curParser.IsNull())
{
IAssemblyMetadata mdReader = GetGlobalMetadata();
var decoder = new R2RSignatureDecoder <TType, TMethod, TGenericContext>(provider, default(TGenericContext), mdReader.MetadataReader, this, (int)curParser.Offset);
TMethod customMethod = decoder.ParseMethod();
int runtimeFunctionId;
int?fixupOffset;
GetRuntimeFunctionIndexFromOffset((int)decoder.Offset, out runtimeFunctionId, out fixupOffset);
ReadyToRunMethod r2rMethod = _runtimeFunctionToMethod[runtimeFunctionId];
if (!Object.ReferenceEquals(customMethod, null) && !foundMethods.ContainsKey(customMethod))
{
foundMethods.Add(customMethod, r2rMethod);
}
foundMethods.Add(customMethod, r2rMethod);
curParser = allEntriesEnum.GetNext();
}
}
public IReadOnlyDictionary <TMethod, ReadyToRunMethod> GetCustomMethodToRuntimeFunctionMapping <TType, TMethod, TGenericContext>(IR2RSignatureTypeProvider <TType, TMethod, TGenericContext> provider)
{
EnsureEntrypointRuntimeFunctionToReadyToRunMethodDict();
Dictionary <TMethod, ReadyToRunMethod> customMethods = new Dictionary <TMethod, ReadyToRunMethod>();
if (ReadyToRunHeader.Sections.TryGetValue(ReadyToRunSectionType.RuntimeFunctions, out ReadyToRunSection runtimeFunctionSection))
{
ParseMethodDefEntrypoints((section, reader) => ParseMethodDefEntrypointsSectionCustom <TType, TMethod, TGenericContext>(provider, customMethods, section, reader));
ParseInstanceMethodEntrypointsCustom <TType, TMethod, TGenericContext>(provider, customMethods);
}
return(customMethods);
}
