public static unsafe bool TryGetTargetOfUnboxingAndInstantiatingStub(IntPtr maybeInstantiatingAndUnboxingStub, out IntPtr targetMethod)
{
targetMethod = IntPtr.Zero;
// Get module
IntPtr associatedModule = RuntimeAugments.GetOSModuleFromPointer(maybeInstantiatingAndUnboxingStub);
if (associatedModule == IntPtr.Zero)
{
return false;
}
// Get UnboxingAndInstantiatingTable
UnboxingAndInstantiatingStubMapEntry* pBlob;
uint cbBlob;
if (!RuntimeAugments.FindBlob(new TypeManagerHandle(associatedModule), (int)ReflectionMapBlob.UnboxingAndInstantiatingStubMap, (IntPtr)(&pBlob), (IntPtr)(&cbBlob)))
{
return false;
}
uint cStubs = cbBlob / (uint)sizeof(UnboxingAndInstantiatingStubMapEntry);
for (uint i = 0; i < cStubs; ++i)
{
if (RvaToFunctionPointer(new TypeManagerHandle(associatedModule), pBlob[i].StubMethodRva) == maybeInstantiatingAndUnboxingStub)
{
// We found a match, create pointer from RVA and move on.
targetMethod = RvaToFunctionPointer(new TypeManagerHandle(associatedModule), pBlob[i].MethodRva);
return true;
}
}
// Stub not found.
return false;
}
//
// Returns the native layout info reader
//
internal static unsafe NativeReader GetNativeLayoutInfoReader(TypeManagerHandle moduleHandle)
{
Debug.Assert(!moduleHandle.IsNull);
if (t_moduleNativeReaders == null)
{
t_moduleNativeReaders = new LowLevelDictionary <TypeManagerHandle, NativeReader>();
}
NativeReader result;
if (t_moduleNativeReaders.TryGetValue(moduleHandle, out result))
{
return(result);
}
byte *pBlob;
uint cbBlob;
if (RuntimeAugments.FindBlob(moduleHandle, (int)ReflectionMapBlob.NativeLayoutInfo, new IntPtr(&pBlob), new IntPtr(&cbBlob)))
{
result = new NativeReader(pBlob, cbBlob);
}
t_moduleNativeReaders.Add(moduleHandle, result);
return(result);
}
// get the statics hash table, external references, and static info table for a module
// TODO multi-file: consider whether we want to cache this info
private unsafe bool GetStaticsInfoHashtable(IntPtr moduleHandle, out NativeHashtable staticsInfoHashtable, out ExternalReferencesTable externalReferencesLookup, out ExternalReferencesTable staticInfoLookup)
{
byte *pBlob;
uint cbBlob;
staticsInfoHashtable = default(NativeHashtable);
externalReferencesLookup = default(ExternalReferencesTable);
staticInfoLookup = default(ExternalReferencesTable);
// Load statics info hashtable
if (!RuntimeAugments.FindBlob(moduleHandle, (int)ReflectionMapBlob.StaticsInfoHashtable, new IntPtr(&pBlob), new IntPtr(&cbBlob)))
{
return(false);
}
NativeReader reader = new NativeReader(pBlob, cbBlob);
NativeParser parser = new NativeParser(reader, 0);
if (!externalReferencesLookup.InitializeNativeReferences(moduleHandle))
{
return(false);
}
if (!staticInfoLookup.InitializeNativeStatics(moduleHandle))
{
return(false);
}
staticsInfoHashtable = new NativeHashtable(parser);
return(true);
}
/// <summary>
/// Register all modules which were added (Registered) to the runtime and are not already registered with the TypeLoader.
/// </summary>
/// <param name="moduleType">Type to assign to all new modules.</param>
public void RegisterNewModules(ModuleType moduleType)
{
// prevent multiple threads from registering modules concurrently
using (LockHolder.Hold(_moduleRegistrationLock))
{
// Fetch modules that have already been registered with the runtime
int loadedModuleCount = RuntimeAugments.GetLoadedModules(null);
TypeManagerHandle[] loadedModuleHandles = new TypeManagerHandle[loadedModuleCount];
int loadedModuleCountUpdated = RuntimeAugments.GetLoadedModules(loadedModuleHandles);
Debug.Assert(loadedModuleCount == loadedModuleCountUpdated);
LowLevelList <TypeManagerHandle> newModuleHandles = new LowLevelList <TypeManagerHandle>(loadedModuleHandles.Length);
foreach (TypeManagerHandle moduleHandle in loadedModuleHandles)
{
// Skip already registered modules.
if (_loadedModuleMap.HandleToModuleIndex.TryGetValue(moduleHandle, out _))
{
continue;
}
newModuleHandles.Add(moduleHandle);
}
// Copy existing modules to new dictionary
int oldModuleCount = _loadedModuleMap.Modules.Length;
ModuleInfo[] updatedModules = new ModuleInfo[oldModuleCount + newModuleHandles.Count];
if (oldModuleCount > 0)
{
Array.Copy(_loadedModuleMap.Modules, 0, updatedModules, 0, oldModuleCount);
}
for (int newModuleIndex = 0; newModuleIndex < newModuleHandles.Count; newModuleIndex++)
{
ModuleInfo newModuleInfo;
unsafe
{
byte *pBlob;
uint cbBlob;
if (RuntimeAugments.FindBlob(newModuleHandles[newModuleIndex], (int)ReflectionMapBlob.EmbeddedMetadata, new IntPtr(&pBlob), new IntPtr(&cbBlob)))
{
newModuleInfo = new NativeFormatModuleInfo(newModuleHandles[newModuleIndex], moduleType, (IntPtr)pBlob, (int)cbBlob);
}
else
{
newModuleInfo = new ModuleInfo(newModuleHandles[newModuleIndex], moduleType);
}
}
updatedModules[oldModuleCount + newModuleIndex] = newModuleInfo;
_moduleRegistrationCallbacks?.Invoke(newModuleInfo);
}
// Atomically update the module map
_loadedModuleMap = new ModuleMap(updatedModules);
}
}
/// <summary>
/// Locate reflection blob in a given module and construct its metadata reader.
/// </summary>
/// <param name="moduleHandle">Module handle to register</param>
unsafe void CreateMetadataReader(IntPtr moduleHandle)
{
uint *pBlob;
uint cbBlob;
if (RuntimeAugments.FindBlob(moduleHandle, (int)ReflectionMapBlob.EmbeddedMetadata, (IntPtr)(&pBlob), (IntPtr)(&cbBlob)))
{
MetadataReader reader = new MetadataReader((IntPtr)pBlob, (int)cbBlob);
_moduleToMetadataReader.Add(moduleHandle, reader);
}
}
public unsafe bool TryFindBlob(int blobId, out byte *pBlob, out uint cbBlob)
{
pBlob = null;
cbBlob = 0;
fixed(byte **ppBlob = &pBlob)
{
fixed(uint *pcbBlob = &cbBlob)
{
return(RuntimeAugments.FindBlob(Handle, (int)blobId, new IntPtr(ppBlob), new IntPtr(pcbBlob)));
}
}
}
/// <summary>
/// Initialize module info and construct per-module metadata reader.
/// </summary>
/// <param name="moduleHandle">Handle (address) of module to initialize</param>
internal unsafe ModuleInfo(IntPtr moduleHandle)
{
Handle = moduleHandle;
byte *pBlob;
uint cbBlob;
if (RuntimeAugments.FindBlob(moduleHandle, (int)ReflectionMapBlob.EmbeddedMetadata, new IntPtr(&pBlob), new IntPtr(&cbBlob)))
{
MetadataReader = new MetadataReader((IntPtr)pBlob, (int)cbBlob);
}
}
public static unsafe bool TryGetTargetOfUnboxingAndInstantiatingStub(IntPtr maybeInstantiatingAndUnboxingStub, out IntPtr targetMethod)
{
targetMethod = RuntimeAugments.GetTargetOfUnboxingAndInstantiatingStub(maybeInstantiatingAndUnboxingStub);
if (targetMethod != IntPtr.Zero)
{
return true;
}
// TODO: The rest of the code in this function is specific to ProjectN only. When we kill the binder, get rid of this
// linear search code (the only API that should be used for the lookup is the one above)
// Get module
IntPtr associatedModule = RuntimeAugments.GetOSModuleFromPointer(maybeInstantiatingAndUnboxingStub);
if (associatedModule == IntPtr.Zero)
{
return false;
}
// Module having a type manager means we are not in ProjectN mode. Bail out earlier.
foreach (TypeManagerHandle handle in ModuleList.Enumerate())
{
if (handle.OsModuleBase == associatedModule && handle.IsTypeManager)
{
return false;
}
}
// Get UnboxingAndInstantiatingTable
UnboxingAndInstantiatingStubMapEntry* pBlob;
uint cbBlob;
if (!RuntimeAugments.FindBlob(new TypeManagerHandle(associatedModule), (int)ReflectionMapBlob.UnboxingAndInstantiatingStubMap, (IntPtr)(&pBlob), (IntPtr)(&cbBlob)))
{
return false;
}
uint cStubs = cbBlob / (uint)sizeof(UnboxingAndInstantiatingStubMapEntry);
for (uint i = 0; i < cStubs; ++i)
{
if (RvaToFunctionPointer(new TypeManagerHandle(associatedModule), pBlob[i].StubMethodRva) == maybeInstantiatingAndUnboxingStub)
{
// We found a match, create pointer from RVA and move on.
targetMethod = RvaToFunctionPointer(new TypeManagerHandle(associatedModule), pBlob[i].MethodRva);
return true;
}
}
// Stub not found.
return false;
}
private unsafe static bool TryGetNativeReaderForBlob(IntPtr module, ReflectionMapBlob blob, out NativeReader reader)
{
byte *pBlob;
uint cbBlob;
if (RuntimeAugments.FindBlob(module, (int)blob, (IntPtr)(&pBlob), (IntPtr)(&cbBlob)))
{
reader = new NativeReader(pBlob, cbBlob);
return(true);
}
reader = default(NativeReader);
return(false);
}
private unsafe bool Initialize(TypeManagerHandle typeManager, ReflectionMapBlob blobId)
{
byte *pBlob;
uint cbBlob;
if (!RuntimeAugments.FindBlob(typeManager, (int)blobId, (IntPtr)(void *)&pBlob, (IntPtr)(void *)&cbBlob))
{
_elements = IntPtr.Zero;
_elementsCount = 0;
return(false);
}
_elements = (IntPtr)pBlob;
_elementsCount = (uint)(cbBlob / sizeof(uint));
return(true);
}
unsafe public ExternalReferencesTable(IntPtr moduleHandle, ReflectionMapBlob blobId)
{
_moduleHandle = moduleHandle;
uint *pBlob;
uint cbBlob;
if (RuntimeAugments.FindBlob(moduleHandle, (int)blobId, (IntPtr)(&pBlob), (IntPtr)(&cbBlob)))
{
_count = cbBlob / sizeof(uint);
_base = pBlob;
}
else
{
_count = 0;
_base = null;
}
}
private unsafe bool Initialize(IntPtr moduleHandle, ReflectionMapBlob blobId)
{
_moduleHandle = moduleHandle;
byte *pBlob;
uint cbBlob;
if (!RuntimeAugments.FindBlob(moduleHandle, (int)blobId, new IntPtr(&pBlob), new IntPtr(&cbBlob)))
{
_elements = IntPtr.Zero;
_elementsCount = 0;
return(false);
}
_elements = (IntPtr)pBlob;
_elementsCount = (uint)(cbBlob / sizeof(TableElement));
return(true);
}
// get the generics hash table and external references table for a module
// TODO multi-file: consider whether we want to cache this info
private unsafe bool GetHashtableFromBlob(IntPtr moduleHandle, ReflectionMapBlob blobId, out NativeHashtable hashtable, out ExternalReferencesTable externalReferencesLookup)
{
byte* pBlob;
uint cbBlob;
hashtable = default(NativeHashtable);
externalReferencesLookup = default(ExternalReferencesTable);
if (!RuntimeAugments.FindBlob(moduleHandle, (int)blobId, new IntPtr(&pBlob), new IntPtr(&cbBlob)))
return false;
NativeReader reader = new NativeReader(pBlob, cbBlob);
NativeParser parser = new NativeParser(reader, 0);
hashtable = new NativeHashtable(parser);
return externalReferencesLookup.InitializeNativeReferences(moduleHandle);
}
//
// Returns the native layout info reader
//
internal unsafe NativeReader GetNativeLayoutInfoReader(IntPtr moduleHandle)
{
Debug.Assert(moduleHandle != IntPtr.Zero);
if (t_moduleNativeReaders == null)
t_moduleNativeReaders = new LowLevelDictionary<IntPtr, NativeReader>();
NativeReader result = null;
if (t_moduleNativeReaders.TryGetValue(moduleHandle, out result))
return result;
byte* pBlob;
uint cbBlob;
if (RuntimeAugments.FindBlob(moduleHandle, (int)ReflectionMapBlob.NativeLayoutInfo, new IntPtr(&pBlob), new IntPtr(&cbBlob)))
result = new NativeReader(pBlob, cbBlob);
t_moduleNativeReaders.Add(moduleHandle, result);
return result;
}
private MetadataTable(IntPtr moduleHandle, ReflectionMapBlob blobId, int elementSize)
{
Debug.Assert(elementSize != 0);
_elementSize = elementSize;
byte *pBlob;
uint cbBlob;
if (!RuntimeAugments.FindBlob(moduleHandle, (int)blobId, new IntPtr(&pBlob), new IntPtr(&cbBlob)))
{
pBlob = null;
cbBlob = 0;
}
Debug.Assert(cbBlob % elementSize == 0);
_blob = pBlob;
ElementCount = cbBlob / (uint)elementSize;
}
private unsafe Stream ReadResourceFromBlob(ResourceInfo resourceInfo)
{
byte *pBlob;
uint cbBlob;
if (!RuntimeAugments.FindBlob(resourceInfo.ModuleHandle, (int)ReflectionMapBlob.BlobIdResourceData, (IntPtr)(&pBlob), (IntPtr)(&cbBlob)))
{
throw new BadImageFormatException();
}
checked
{
if (resourceInfo.Index > cbBlob || resourceInfo.Index + resourceInfo.Length > cbBlob)
{
throw new BadImageFormatException();
}
}
UnmanagedMemoryStream stream = new UnmanagedMemoryStream(pBlob + resourceInfo.Index, resourceInfo.Length);
return(stream);
}
/// <summary>
/// Initialize module info and construct per-module metadata reader.
/// </summary>
/// <param name="moduleHandle">Handle (address) of module to initialize</param>
internal ModuleInfo(IntPtr moduleHandle, ModuleType moduleType)
{
Handle = moduleHandle;
ModuleType = moduleType;
byte *pBlob;
uint cbBlob;
if (RuntimeAugments.FindBlob(moduleHandle, (int)ReflectionMapBlob.EmbeddedMetadata, new IntPtr(&pBlob), new IntPtr(&cbBlob)))
{
MetadataReader = new MetadataReader((IntPtr)pBlob, (int)cbBlob);
}
DynamicModule *dynamicModulePtr = (DynamicModule *)MemoryHelpers.AllocateMemory(sizeof(DynamicModule));
dynamicModulePtr->CbSize = DynamicModule.DynamicModuleSize;
Debug.Assert(sizeof(DynamicModule) >= dynamicModulePtr->CbSize);
#if SUPPORTS_R2R_LOADING
if (moduleType == ModuleType.ReadyToRun)
{
// ReadyToRun modules utilize dynamic type resolution
dynamicModulePtr->DynamicTypeSlotDispatchResolve = Intrinsics.AddrOf(
(Func <IntPtr, IntPtr, ushort, IntPtr>)ReadyToRunCallbacks.ResolveTypeSlotDispatch);
}
else
#endif
{
Debug.Assert(moduleType == ModuleType.Eager);
// Pre-generated modules do not
dynamicModulePtr->DynamicTypeSlotDispatchResolve = IntPtr.Zero;
}
dynamicModulePtr->GetRuntimeException = Intrinsics.AddrOf(
(Func <ExceptionIDs, Exception>)RuntimeExceptionHelpers.GetRuntimeException);
DynamicModulePtr = dynamicModulePtr;
}
// Lazy loadings of hashtables (load on-demand only)
private unsafe NativeHashtable LoadHashtable(IntPtr moduleHandle, ReflectionMapBlob hashtableBlobId, out ExternalReferencesTable externalFixupsTable)
{
// Load the common fixups table
externalFixupsTable = default(ExternalReferencesTable);
if (!externalFixupsTable.InitializeCommonFixupsTable(moduleHandle))
{
return(default(NativeHashtable));
}
// Load the hashtable
byte *pBlob;
uint cbBlob;
if (!RuntimeAugments.FindBlob(moduleHandle, (int)hashtableBlobId, new IntPtr(&pBlob), new IntPtr(&cbBlob)))
{
return(default(NativeHashtable));
}
NativeReader reader = new NativeReader(pBlob, cbBlob);
NativeParser parser = new NativeParser(reader, 0);
return(new NativeHashtable(parser));
}
