public IEnumerable <DependencyListEntry> InstantiateDependencies(NodeFactory factory, Instantiation typeInstantiation, Instantiation methodInstantiation)
{
ArrayBuilder <DependencyListEntry> result = new ArrayBuilder <DependencyListEntry>();
var lookupContext = new GenericLookupResultContext(_dictionaryOwner, typeInstantiation, methodInstantiation);
switch (_id)
{
case ReadyToRunHelperId.GetGCStaticBase:
case ReadyToRunHelperId.GetThreadStaticBase:
{
// If the type has a lazy static constructor, we also need the non-GC static base
// because that's where the class constructor context is.
TypeDesc type = (TypeDesc)_target;
if (factory.TypeSystemContext.HasLazyStaticConstructor(type))
{
result.Add(
new DependencyListEntry(
factory.GenericLookup.TypeNonGCStaticBase(type).GetTarget(factory, lookupContext),
"Dictionary dependency"));
}
}
break;
case ReadyToRunHelperId.DelegateCtor:
{
DelegateCreationInfo createInfo = (DelegateCreationInfo)_target;
if (createInfo.NeedsVirtualMethodUseTracking)
{
MethodDesc instantiatedTargetMethod = createInfo.TargetMethod.GetNonRuntimeDeterminedMethodFromRuntimeDeterminedMethodViaSubstitution(typeInstantiation, methodInstantiation);
if (!factory.VTable(instantiatedTargetMethod.OwningType).HasFixedSlots)
{
result.Add(
new DependencyListEntry(
factory.VirtualMethodUse(instantiatedTargetMethod),
"Dictionary dependency"));
}
// TODO: https://github.com/dotnet/corert/issues/3224
if (instantiatedTargetMethod.IsAbstract)
{
result.Add(new DependencyListEntry(factory.ReflectableMethod(instantiatedTargetMethod), "Abstract reflectable method"));
}
}
}
break;
}
// All generic lookups depend on the thing they point to
result.Add(new DependencyListEntry(
_lookupSignature.GetTarget(factory, lookupContext),
"Dictionary dependency"));
return(result.ToArray());
}
public IEnumerable <DependencyListEntry> InstantiateDependencies(NodeFactory factory, Instantiation typeInstantiation, Instantiation methodInstantiation)
{
DependencyList result = new DependencyList();
var lookupContext = new GenericLookupResultContext(_dictionaryOwner, typeInstantiation, methodInstantiation);
switch (_id)
{
case ReadyToRunHelperId.GetGCStaticBase:
case ReadyToRunHelperId.GetThreadStaticBase:
{
// If the type has a lazy static constructor, we also need the non-GC static base
// because that's where the class constructor context is.
TypeDesc type = (TypeDesc)_target;
if (factory.PreinitializationManager.HasLazyStaticConstructor(type))
{
result.Add(
new DependencyListEntry(
factory.GenericLookup.TypeNonGCStaticBase(type).GetTarget(factory, lookupContext),
"Dictionary dependency"));
}
}
break;
case ReadyToRunHelperId.DelegateCtor:
{
DelegateCreationInfo createInfo = (DelegateCreationInfo)_target;
if (createInfo.NeedsVirtualMethodUseTracking)
{
MethodDesc instantiatedTargetMethod = createInfo.TargetMethod.GetNonRuntimeDeterminedMethodFromRuntimeDeterminedMethodViaSubstitution(typeInstantiation, methodInstantiation);
if (!factory.VTable(instantiatedTargetMethod.OwningType).HasFixedSlots)
{
result.Add(
new DependencyListEntry(
factory.VirtualMethodUse(instantiatedTargetMethod),
"Dictionary dependency"));
}
factory.MetadataManager.GetDependenciesDueToVirtualMethodReflectability(ref result, factory, instantiatedTargetMethod);
}
}
break;
}
// All generic lookups depend on the thing they point to
result.Add(new DependencyListEntry(
_lookupSignature.GetTarget(factory, lookupContext),
"Dictionary dependency"));
return(result.ToArray());
}
private void getReadyToRunDelegateCtorHelper(ref CORINFO_RESOLVED_TOKEN pTargetMethod, CORINFO_CLASS_STRUCT_* delegateType, ref CORINFO_LOOKUP pLookup)
{
#if DEBUG
// In debug, write some bogus data to the struct to ensure we have filled everything
// properly.
fixed (CORINFO_LOOKUP* tmp = &pLookup)
MemoryHelper.FillMemory((byte*)tmp, 0xcc, sizeof(CORINFO_LOOKUP));
#endif
MethodDesc targetMethod = HandleToObject(pTargetMethod.hMethod);
TypeDesc delegateTypeDesc = HandleToObject(delegateType);
if (targetMethod.IsSharedByGenericInstantiations)
{
// If the method is not exact, fetch it as a runtime determined method.
targetMethod = (MethodDesc)GetRuntimeDeterminedObjectForToken(ref pTargetMethod);
}
bool isLdvirtftn = pTargetMethod.tokenType == CorInfoTokenKind.CORINFO_TOKENKIND_Ldvirtftn;
DelegateCreationInfo delegateInfo = _compilation.GetDelegateCtor(delegateTypeDesc, targetMethod, isLdvirtftn);
if (delegateInfo.NeedsRuntimeLookup)
{
pLookup.lookupKind.needsRuntimeLookup = true;
MethodDesc contextMethod = methodFromContext(pTargetMethod.tokenContext);
// We should not be inlining these. RyuJIT should have aborted inlining already.
Debug.Assert(contextMethod == MethodBeingCompiled);
pLookup.lookupKind.runtimeLookupKind = GetGenericRuntimeLookupKind(contextMethod);
pLookup.lookupKind.runtimeLookupFlags = (ushort)ReadyToRunHelperId.DelegateCtor;
pLookup.lookupKind.runtimeLookupArgs = (void*)ObjectToHandle(delegateInfo);
}
else
{
pLookup.lookupKind.needsRuntimeLookup = false;
pLookup.constLookup = CreateConstLookupToSymbol(_compilation.NodeFactory.ReadyToRunHelper(ReadyToRunHelperId.DelegateCtor, delegateInfo));
}
}
protected override void EmitCode(NodeFactory factory, ref X64Emitter encoder, bool relocsOnly)
{
switch (Id)
{
case ReadyToRunHelperId.VirtualCall:
{
MethodDesc targetMethod = (MethodDesc)Target;
Debug.Assert(!targetMethod.OwningType.IsInterface);
Debug.Assert(!targetMethod.CanMethodBeInSealedVTable());
AddrMode loadFromThisPtr = new AddrMode(encoder.TargetRegister.Arg0, null, 0, 0, AddrModeSize.Int64);
encoder.EmitMOV(encoder.TargetRegister.Result, ref loadFromThisPtr);
int pointerSize = factory.Target.PointerSize;
int slot = 0;
if (!relocsOnly)
{
slot = VirtualMethodSlotHelper.GetVirtualMethodSlot(factory, targetMethod, targetMethod.OwningType);
Debug.Assert(slot != -1);
}
Debug.Assert(((NativeSequencePoint[])((INodeWithDebugInfo)this).GetNativeSequencePoints())[1].NativeOffset == encoder.Builder.CountBytes);
AddrMode jmpAddrMode = new AddrMode(encoder.TargetRegister.Result, null, EETypeNode.GetVTableOffset(pointerSize) + (slot * pointerSize), 0, AddrModeSize.Int64);
encoder.EmitJmpToAddrMode(ref jmpAddrMode);
}
break;
case ReadyToRunHelperId.GetNonGCStaticBase:
{
MetadataType target = (MetadataType)Target;
bool hasLazyStaticConstructor = factory.PreinitializationManager.HasLazyStaticConstructor(target);
encoder.EmitLEAQ(encoder.TargetRegister.Result, factory.TypeNonGCStaticsSymbol(target));
if (!hasLazyStaticConstructor)
{
encoder.EmitRET();
}
else
{
// We need to trigger the cctor before returning the base. It is stored at the beginning of the non-GC statics region.
encoder.EmitLEAQ(encoder.TargetRegister.Arg0, factory.TypeNonGCStaticsSymbol(target), -NonGCStaticsNode.GetClassConstructorContextSize(factory.Target));
AddrMode initialized = new AddrMode(encoder.TargetRegister.Arg0, null, factory.Target.PointerSize, 0, AddrModeSize.Int32);
encoder.EmitCMP(ref initialized, 1);
encoder.EmitRETIfEqual();
encoder.EmitMOV(encoder.TargetRegister.Arg1, encoder.TargetRegister.Result);
encoder.EmitJMP(factory.HelperEntrypoint(HelperEntrypoint.EnsureClassConstructorRunAndReturnNonGCStaticBase));
}
}
break;
case ReadyToRunHelperId.GetThreadStaticBase:
{
MetadataType target = (MetadataType)Target;
encoder.EmitLEAQ(encoder.TargetRegister.Arg2, factory.TypeThreadStaticIndex(target));
// First arg: address of the TypeManager slot that provides the helper with
// information about module index and the type manager instance (which is used
// for initialization on first access).
AddrMode loadFromArg2 = new AddrMode(encoder.TargetRegister.Arg2, null, 0, 0, AddrModeSize.Int64);
encoder.EmitMOV(encoder.TargetRegister.Arg0, ref loadFromArg2);
// Second arg: index of the type in the ThreadStatic section of the modules
AddrMode loadFromArg2AndDelta = new AddrMode(encoder.TargetRegister.Arg2, null, factory.Target.PointerSize, 0, AddrModeSize.Int32);
encoder.EmitMOV(encoder.TargetRegister.Arg1, ref loadFromArg2AndDelta);
if (!factory.PreinitializationManager.HasLazyStaticConstructor(target))
{
encoder.EmitJMP(factory.ExternSymbol("RhpGetThreadStaticBaseForType"));
}
else
{
encoder.EmitLEAQ(encoder.TargetRegister.Arg2, factory.TypeNonGCStaticsSymbol(target), -NonGCStaticsNode.GetClassConstructorContextSize(factory.Target));
AddrMode initialized = new AddrMode(encoder.TargetRegister.Arg2, null, factory.Target.PointerSize, 0, AddrModeSize.Int32);
encoder.EmitCMP(ref initialized, 1);
encoder.EmitJE(factory.ExternSymbol("RhpGetThreadStaticBaseForType"));
encoder.EmitJMP(factory.HelperEntrypoint(HelperEntrypoint.EnsureClassConstructorRunAndReturnThreadStaticBase));
}
}
break;
case ReadyToRunHelperId.GetGCStaticBase:
{
MetadataType target = (MetadataType)Target;
encoder.EmitLEAQ(encoder.TargetRegister.Result, factory.TypeGCStaticsSymbol(target));
AddrMode loadFromRax = new AddrMode(encoder.TargetRegister.Result, null, 0, 0, AddrModeSize.Int64);
encoder.EmitMOV(encoder.TargetRegister.Result, ref loadFromRax);
if (!factory.PreinitializationManager.HasLazyStaticConstructor(target))
{
encoder.EmitRET();
}
else
{
// We need to trigger the cctor before returning the base. It is stored at the beginning of the non-GC statics region.
encoder.EmitLEAQ(encoder.TargetRegister.Arg0, factory.TypeNonGCStaticsSymbol(target), -NonGCStaticsNode.GetClassConstructorContextSize(factory.Target));
AddrMode initialized = new AddrMode(encoder.TargetRegister.Arg0, null, factory.Target.PointerSize, 0, AddrModeSize.Int32);
encoder.EmitCMP(ref initialized, 1);
encoder.EmitRETIfEqual();
encoder.EmitMOV(encoder.TargetRegister.Arg1, encoder.TargetRegister.Result);
encoder.EmitJMP(factory.HelperEntrypoint(HelperEntrypoint.EnsureClassConstructorRunAndReturnGCStaticBase));
}
}
break;
case ReadyToRunHelperId.DelegateCtor:
{
DelegateCreationInfo target = (DelegateCreationInfo)Target;
if (target.TargetNeedsVTableLookup)
{
Debug.Assert(!target.TargetMethod.CanMethodBeInSealedVTable());
AddrMode loadFromThisPtr = new AddrMode(encoder.TargetRegister.Arg1, null, 0, 0, AddrModeSize.Int64);
encoder.EmitMOV(encoder.TargetRegister.Arg2, ref loadFromThisPtr);
int slot = 0;
if (!relocsOnly)
{
slot = VirtualMethodSlotHelper.GetVirtualMethodSlot(factory, target.TargetMethod, target.TargetMethod.OwningType);
}
Debug.Assert(slot != -1);
AddrMode loadFromSlot = new AddrMode(encoder.TargetRegister.Arg2, null, EETypeNode.GetVTableOffset(factory.Target.PointerSize) + (slot * factory.Target.PointerSize), 0, AddrModeSize.Int64);
encoder.EmitMOV(encoder.TargetRegister.Arg2, ref loadFromSlot);
}
else
{
ISymbolNode targetMethodNode = target.GetTargetNode(factory);
encoder.EmitLEAQ(encoder.TargetRegister.Arg2, target.GetTargetNode(factory));
}
if (target.Thunk != null)
{
Debug.Assert(target.Constructor.Method.Signature.Length == 3);
encoder.EmitLEAQ(encoder.TargetRegister.Arg3, target.Thunk);
}
else
{
Debug.Assert(target.Constructor.Method.Signature.Length == 2);
}
encoder.EmitJMP(target.Constructor);
}
break;
case ReadyToRunHelperId.ResolveVirtualFunction:
{
MethodDesc targetMethod = (MethodDesc)Target;
if (targetMethod.OwningType.IsInterface)
{
encoder.EmitLEAQ(encoder.TargetRegister.Arg1, factory.InterfaceDispatchCell(targetMethod));
encoder.EmitJMP(factory.ExternSymbol("RhpResolveInterfaceMethod"));
}
else
{
if (relocsOnly)
{
break;
}
AddrMode loadFromThisPtr = new AddrMode(encoder.TargetRegister.Arg0, null, 0, 0, AddrModeSize.Int64);
encoder.EmitMOV(encoder.TargetRegister.Result, ref loadFromThisPtr);
Debug.Assert(!targetMethod.CanMethodBeInSealedVTable());
int slot = VirtualMethodSlotHelper.GetVirtualMethodSlot(factory, targetMethod, targetMethod.OwningType);
Debug.Assert(slot != -1);
AddrMode loadFromSlot = new AddrMode(encoder.TargetRegister.Result, null, EETypeNode.GetVTableOffset(factory.Target.PointerSize) + (slot * factory.Target.PointerSize), 0, AddrModeSize.Int64);
encoder.EmitMOV(encoder.TargetRegister.Result, ref loadFromSlot);
encoder.EmitRET();
}
}
break;
default:
throw new NotImplementedException();
}
}
public IEnumerable <DependencyListEntry> InstantiateDependencies(NodeFactory factory, Instantiation typeInstantiation, Instantiation methodInstantiation)
{
ArrayBuilder <DependencyListEntry> result = new ArrayBuilder <DependencyListEntry>();
switch (_id)
{
case ReadyToRunHelperId.GetGCStaticBase:
case ReadyToRunHelperId.GetThreadStaticBase:
{
// If the type has a lazy static constructor, we also need the non-GC static base
// because that's where the class constructor context is.
TypeDesc type = (TypeDesc)_target;
if (factory.TypeSystemContext.HasLazyStaticConstructor(type))
{
// TODO: Make _dictionaryOwner a RuntimeDetermined type/method and make a substitution with
// typeInstantiation/methodInstantiation to get a concrete type. Then pass the generic dictionary
// node of the concrete type to the GetTarget call. Also change the signature of GetTarget to
// take only the factory and dictionary as input.
result.Add(
new DependencyListEntry(
factory.GenericLookup.TypeNonGCStaticBase(type).GetTarget(factory, typeInstantiation, methodInstantiation, null),
"Dictionary dependency"));
}
}
break;
case ReadyToRunHelperId.DelegateCtor:
{
DelegateCreationInfo createInfo = (DelegateCreationInfo)_target;
if (createInfo.NeedsVirtualMethodUseTracking)
{
MethodDesc instantiatedTargetMethod = createInfo.TargetMethod.InstantiateSignature(typeInstantiation, methodInstantiation);
if (!factory.CompilationModuleGroup.ShouldProduceFullVTable(instantiatedTargetMethod.OwningType))
{
result.Add(
new DependencyListEntry(
factory.VirtualMethodUse(createInfo.TargetMethod.InstantiateSignature(typeInstantiation, methodInstantiation)),
"Dictionary dependency"));
}
// TODO: https://github.com/dotnet/corert/issues/3224
if (instantiatedTargetMethod.IsAbstract)
{
result.Add(new DependencyListEntry(factory.ReflectableMethod(instantiatedTargetMethod), "Abstract reflectable method"));
}
}
}
break;
case ReadyToRunHelperId.ResolveVirtualFunction:
{
MethodDesc instantiatedTarget = ((MethodDesc)_target).InstantiateSignature(typeInstantiation, methodInstantiation);
if (!factory.CompilationModuleGroup.ShouldProduceFullVTable(instantiatedTarget.OwningType))
{
result.Add(
new DependencyListEntry(
factory.VirtualMethodUse(instantiatedTarget),
"Dictionary dependency"));
}
// TODO: https://github.com/dotnet/corert/issues/3224
if (instantiatedTarget.IsAbstract)
{
result.Add(new DependencyListEntry(factory.ReflectableMethod(instantiatedTarget), "Abstract reflectable method"));
}
}
break;
}
// All generic lookups depend on the thing they point to
result.Add(new DependencyListEntry(
_lookupSignature.GetTarget(factory, typeInstantiation, methodInstantiation, null),
"Dictionary dependency"));
return(result.ToArray());
}
private ISymbolNode CreateDelegateCtorHelper(DelegateCreationInfo info, SignatureContext signatureContext)
{
return(info.Constructor);
}
protected override void EmitCode(NodeFactory factory, ref ARMEmitter encoder, bool relocsOnly)
{
switch (Id)
{
case ReadyToRunHelperId.NewHelper:
{
TypeDesc target = (TypeDesc)Target;
encoder.EmitMOV(encoder.TargetRegister.Arg0, factory.ConstructedTypeSymbol(target));
encoder.EmitJMP(factory.ExternSymbol(JitHelper.GetNewObjectHelperForType(target)));
}
break;
case ReadyToRunHelperId.VirtualCall:
{
MethodDesc targetMethod = (MethodDesc)Target;
Debug.Assert(!targetMethod.OwningType.IsInterface);
int pointerSize = factory.Target.PointerSize;
int slot = 0;
if (!relocsOnly)
{
slot = VirtualMethodSlotHelper.GetVirtualMethodSlot(factory, targetMethod);
Debug.Assert(slot != -1);
}
encoder.EmitLDR(encoder.TargetRegister.InterproceduralScratch, encoder.TargetRegister.Arg0, 0);
encoder.EmitLDR(encoder.TargetRegister.InterproceduralScratch, encoder.TargetRegister.InterproceduralScratch,
(short)(EETypeNode.GetVTableOffset(pointerSize) + (slot * pointerSize)));
encoder.EmitJMP(encoder.TargetRegister.InterproceduralScratch);
}
break;
case ReadyToRunHelperId.IsInstanceOf:
{
TypeDesc target = (TypeDesc)Target;
encoder.EmitMOV(encoder.TargetRegister.Arg1, factory.NecessaryTypeSymbol(target));
encoder.EmitJMP(factory.ExternSymbol(JitHelper.GetCastingHelperNameForType(target, false)));
}
break;
case ReadyToRunHelperId.CastClass:
{
TypeDesc target = (TypeDesc)Target;
encoder.EmitMOV(encoder.TargetRegister.Arg1, factory.NecessaryTypeSymbol(target));
encoder.EmitJMP(factory.ExternSymbol(JitHelper.GetCastingHelperNameForType(target, true)));
}
break;
case ReadyToRunHelperId.NewArr1:
{
TypeDesc target = (TypeDesc)Target;
encoder.EmitMOV(encoder.TargetRegister.Arg1, encoder.TargetRegister.Arg0);
encoder.EmitMOV(encoder.TargetRegister.Arg0, factory.ConstructedTypeSymbol(target));
encoder.EmitJMP(factory.ExternSymbol(JitHelper.GetNewArrayHelperForType(target)));
}
break;
case ReadyToRunHelperId.GetNonGCStaticBase:
{
MetadataType target = (MetadataType)Target;
bool hasLazyStaticConstructor = factory.TypeSystemContext.HasLazyStaticConstructor(target);
encoder.EmitMOV(encoder.TargetRegister.Result, factory.TypeNonGCStaticsSymbol(target));
if (!hasLazyStaticConstructor)
{
encoder.EmitRET();
}
else
{
// We need to trigger the cctor before returning the base. It is stored at the beginning of the non-GC statics region.
encoder.EmitMOV(encoder.TargetRegister.Arg2, factory.TypeNonGCStaticsSymbol(target));
encoder.EmitSUB(encoder.TargetRegister.Arg2, ((byte)NonGCStaticsNode.GetClassConstructorContextStorageSize(factory.Target, target)));
// cmp [r2 + ptrSize], 1
encoder.EmitLDR(encoder.TargetRegister.Arg3, encoder.TargetRegister.Arg2, ((short)factory.Target.PointerSize));
encoder.EmitCMP(encoder.TargetRegister.Arg3, ((byte)1));
// return if cmp
encoder.EmitRETIfEqual();
encoder.EmitMOV(encoder.TargetRegister.Arg1, encoder.TargetRegister.Result);
encoder.EmitMOV(encoder.TargetRegister.Arg0 /*Result*/, encoder.TargetRegister.Arg2);
encoder.EmitJMP(factory.HelperEntrypoint(HelperEntrypoint.EnsureClassConstructorRunAndReturnNonGCStaticBase));
}
}
break;
case ReadyToRunHelperId.GetThreadStaticBase:
{
MetadataType target = (MetadataType)Target;
encoder.EmitMOV(encoder.TargetRegister.Arg2, factory.TypeThreadStaticIndex(target));
// First arg: address of the TypeManager slot that provides the helper with
// information about module index and the type manager instance (which is used
// for initialization on first access).
encoder.EmitLDR(encoder.TargetRegister.Arg0, encoder.TargetRegister.Arg2);
// Second arg: index of the type in the ThreadStatic section of the modules
encoder.EmitLDR(encoder.TargetRegister.Arg1, encoder.TargetRegister.Arg2, ((short)factory.Target.PointerSize));
if (!factory.TypeSystemContext.HasLazyStaticConstructor(target))
{
encoder.EmitJMP(factory.HelperEntrypoint(HelperEntrypoint.GetThreadStaticBaseForType));
}
else
{
encoder.EmitMOV(encoder.TargetRegister.Arg2, factory.TypeNonGCStaticsSymbol(target));
encoder.EmitSUB(encoder.TargetRegister.Arg2, (byte)(NonGCStaticsNode.GetClassConstructorContextStorageSize(factory.Target, target)));
// TODO: performance optimization - inline the check verifying whether we need to trigger the cctor
encoder.EmitJMP(factory.HelperEntrypoint(HelperEntrypoint.EnsureClassConstructorRunAndReturnThreadStaticBase));
}
}
break;
case ReadyToRunHelperId.GetGCStaticBase:
{
MetadataType target = (MetadataType)Target;
encoder.EmitMOV(encoder.TargetRegister.Result, factory.TypeGCStaticsSymbol(target));
encoder.EmitLDR(encoder.TargetRegister.Result, encoder.TargetRegister.Result);
encoder.EmitLDR(encoder.TargetRegister.Result, encoder.TargetRegister.Result);
if (!factory.TypeSystemContext.HasLazyStaticConstructor(target))
{
encoder.EmitRET();
}
else
{
// We need to trigger the cctor before returning the base. It is stored at the beginning of the non-GC statics region.
encoder.EmitMOV(encoder.TargetRegister.Arg2, factory.TypeNonGCStaticsSymbol(target));
// Get cctor pointer: offset is usually equal to the double size of the pointer, therefore we can use arm sub imm
encoder.EmitSUB(encoder.TargetRegister.Arg2, (byte)(NonGCStaticsNode.GetClassConstructorContextStorageSize(factory.Target, target)));
// cmp [r2 + ptrSize], 1
encoder.EmitLDR(encoder.TargetRegister.Arg3, encoder.TargetRegister.Arg2, ((short)factory.Target.PointerSize));
encoder.EmitCMP(encoder.TargetRegister.Arg3, (byte)1);
// return if cmp
encoder.EmitRETIfEqual();
encoder.EmitMOV(encoder.TargetRegister.Arg1, encoder.TargetRegister.Result);
encoder.EmitMOV(encoder.TargetRegister.Arg0 /*Result*/, encoder.TargetRegister.Arg2);
encoder.EmitJMP(factory.HelperEntrypoint(HelperEntrypoint.EnsureClassConstructorRunAndReturnGCStaticBase));
}
}
break;
case ReadyToRunHelperId.DelegateCtor:
{
DelegateCreationInfo target = (DelegateCreationInfo)Target;
if (target.TargetNeedsVTableLookup)
{
encoder.EmitLDR(encoder.TargetRegister.Arg2, encoder.TargetRegister.Arg1);
int slot = 0;
if (!relocsOnly)
{
slot = VirtualMethodSlotHelper.GetVirtualMethodSlot(factory, target.TargetMethod);
}
Debug.Assert(slot != -1);
encoder.EmitLDR(encoder.TargetRegister.Arg2, encoder.TargetRegister.Arg2,
((short)(EETypeNode.GetVTableOffset(factory.Target.PointerSize) + (slot * factory.Target.PointerSize))));
}
else
{
ISymbolNode targetMethodNode = target.GetTargetNode(factory);
encoder.EmitMOV(encoder.TargetRegister.Arg2, target.GetTargetNode(factory));
}
if (target.Thunk != null)
{
Debug.Assert(target.Constructor.Method.Signature.Length == 3);
encoder.EmitMOV(encoder.TargetRegister.Arg3, target.Thunk);
}
else
{
Debug.Assert(target.Constructor.Method.Signature.Length == 2);
}
encoder.EmitJMP(target.Constructor);
}
break;
case ReadyToRunHelperId.ResolveVirtualFunction:
{
ARMDebug.EmitHelperNYIAssert(factory, ref encoder, ReadyToRunHelperId.ResolveVirtualFunction);
/*
***
***NOT TESTED!!!
***
***MethodDesc targetMethod = (MethodDesc)Target;
***if (targetMethod.OwningType.IsInterface)
***{
***encoder.EmitMOV(encoder.TargetRegister.Arg1, factory.InterfaceDispatchCell(targetMethod));
***encoder.EmitJMP(factory.ExternSymbol("RhpResolveInterfaceMethod"));
***}
***else
***{
***if (relocsOnly)
*** break;
***
***encoder.EmitLDR(encoder.TargetRegister.Result, encoder.TargetRegister.Arg0);
***
***int slot = VirtualMethodSlotHelper.GetVirtualMethodSlot(factory, targetMethod);
***Debug.Assert(slot != -1);
***encoder.EmitLDR(encoder.TargetRegister.Result, encoder.TargetRegister.Result,
*** ((short)(EETypeNode.GetVTableOffset(factory.Target.PointerSize) + (slot * factory.Target.PointerSize))));
***encoder.EmitRET();
***}
*/
}
break;
default:
throw new NotImplementedException();
}
}
private void GetCodeForReadyToRunGenericHelper(WebAssemblyCodegenCompilation compilation, ReadyToRunGenericHelperNode node, NodeFactory factory)
{
LLVMBuilderRef builder = compilation.Module.Context.CreateBuilder();
var args = new List <LLVMTypeRef>();
MethodDesc delegateCtor = null;
if (node.Id == ReadyToRunHelperId.DelegateCtor)
{
DelegateCreationInfo target = (DelegateCreationInfo)node.Target;
delegateCtor = target.Constructor.Method;
bool isStatic = delegateCtor.Signature.IsStatic;
int argCount = delegateCtor.Signature.Length;
if (!isStatic)
{
argCount++;
}
for (int i = 0; i < argCount; i++)
{
TypeDesc argType;
if (i == 0 && !isStatic)
{
argType = delegateCtor.OwningType;
}
else
{
argType = delegateCtor.Signature[i - (isStatic ? 0 : 1)];
}
args.Add(ILImporter.GetLLVMTypeForTypeDesc(argType));
}
}
LLVMValueRef helperFunc = Module.GetNamedFunction(node.GetMangledName(factory.NameMangler));
if (helperFunc.Handle == IntPtr.Zero)
{
throw new Exception("if the function is requested here, it should have been created earlier");
}
var helperBlock = helperFunc.AppendBasicBlock("genericHelper");
builder.PositionAtEnd(helperBlock);
var importer = new ILImporter(builder, compilation, Module, helperFunc, delegateCtor);
LLVMValueRef ctx;
string gepName;
if (node is ReadyToRunGenericLookupFromTypeNode)
{
// Locate the VTable slot that points to the dictionary
int vtableSlot = VirtualMethodSlotHelper.GetGenericDictionarySlot(factory, (TypeDesc)node.DictionaryOwner);
int pointerSize = factory.Target.PointerSize;
// Load the dictionary pointer from the VTable
int slotOffset = EETypeNode.GetVTableOffset(pointerSize) + (vtableSlot * pointerSize);
var slotGep = builder.BuildGEP(helperFunc.GetParam(1), new[] { LLVMValueRef.CreateConstInt(LLVMTypeRef.Int32, (ulong)slotOffset, false) }, "slotGep");
var slotGepPtrPtr = builder.BuildPointerCast(slotGep,
LLVMTypeRef.CreatePointer(LLVMTypeRef.CreatePointer(LLVMTypeRef.Int8, 0), 0), "slotGepPtrPtr");
ctx = builder.BuildLoad(slotGepPtrPtr, "dictGep");
gepName = "typeNodeGep";
}
else
{
ctx = helperFunc.GetParam(1);
gepName = "paramGep";
}
LLVMValueRef resVar = OutputCodeForDictionaryLookup(builder, factory, node, node.LookupSignature, ctx, gepName);
switch (node.Id)
{
case ReadyToRunHelperId.GetNonGCStaticBase:
{
MetadataType target = (MetadataType)node.Target;
if (compilation.TypeSystemContext.HasLazyStaticConstructor(target))
{
importer.OutputCodeForTriggerCctor(target, resVar);
}
}
break;
case ReadyToRunHelperId.GetGCStaticBase:
{
MetadataType target = (MetadataType)node.Target;
var ptrPtrPtr = builder.BuildBitCast(resVar, LLVMTypeRef.CreatePointer(LLVMTypeRef.CreatePointer(LLVMTypeRef.CreatePointer(LLVMTypeRef.Int8, 0), 0), 0), "ptrPtrPtr");
resVar = builder.BuildLoad(builder.BuildLoad(ptrPtrPtr, "ind1"), "ind2");
if (compilation.TypeSystemContext.HasLazyStaticConstructor(target))
{
GenericLookupResult nonGcRegionLookup = factory.GenericLookup.TypeNonGCStaticBase(target);
var nonGcStaticsBase = OutputCodeForDictionaryLookup(builder, factory, node, nonGcRegionLookup, ctx, "lazyGep");
importer.OutputCodeForTriggerCctor(target, nonGcStaticsBase);
}
}
break;
case ReadyToRunHelperId.GetThreadStaticBase:
{
MetadataType target = (MetadataType)node.Target;
if (compilation.TypeSystemContext.HasLazyStaticConstructor(target))
{
GenericLookupResult nonGcRegionLookup = factory.GenericLookup.TypeNonGCStaticBase(target);
var threadStaticBase = OutputCodeForDictionaryLookup(builder, factory, node, nonGcRegionLookup, ctx, "tsGep");
importer.OutputCodeForTriggerCctor(target, threadStaticBase);
}
resVar = importer.OutputCodeForGetThreadStaticBaseForType(resVar).ValueAsType(LLVMTypeRef.CreatePointer(LLVMTypeRef.Int8, 0), builder);
}
break;
case ReadyToRunHelperId.DelegateCtor:
{
DelegateCreationInfo target = (DelegateCreationInfo)node.Target;
MethodDesc constructor = target.Constructor.Method;
var fatPtr = ILImporter.MakeFatPointer(builder, resVar, compilation);
importer.OutputCodeForDelegateCtorInit(builder, helperFunc, constructor, fatPtr);
}
break;
// These are all simple: just get the thing from the dictionary and we're done
case ReadyToRunHelperId.TypeHandle:
case ReadyToRunHelperId.MethodHandle:
case ReadyToRunHelperId.FieldHandle:
case ReadyToRunHelperId.MethodDictionary:
case ReadyToRunHelperId.MethodEntry:
case ReadyToRunHelperId.VirtualDispatchCell:
case ReadyToRunHelperId.DefaultConstructor:
break;
default:
throw new NotImplementedException();
}
if (node.Id != ReadyToRunHelperId.DelegateCtor)
{
builder.BuildRet(resVar);
}
else
{
builder.BuildRetVoid();
}
}
protected override void EmitCode(NodeFactory factory, ref X64Emitter encoder, bool relocsOnly)
{
switch (Id)
{
case ReadyToRunHelperId.NewHelper:
{
TypeDesc target = (TypeDesc)Target;
encoder.EmitLEAQ(encoder.TargetRegister.Arg0, factory.ConstructedTypeSymbol(target));
encoder.EmitJMP(factory.ExternSymbol(JitHelper.GetNewObjectHelperForType(target)));
}
break;
case ReadyToRunHelperId.VirtualCall:
{
MethodDesc targetMethod = (MethodDesc)Target;
if (targetMethod.OwningType.IsInterface)
{
encoder.EmitLEAQ(Register.R10, factory.InterfaceDispatchCell((MethodDesc)Target));
AddrMode jmpAddrMode = new AddrMode(Register.R10, null, 0, 0, AddrModeSize.Int64);
encoder.EmitJmpToAddrMode(ref jmpAddrMode);
}
else
{
if (relocsOnly)
{
break;
}
AddrMode loadFromThisPtr = new AddrMode(encoder.TargetRegister.Arg0, null, 0, 0, AddrModeSize.Int64);
encoder.EmitMOV(encoder.TargetRegister.Result, ref loadFromThisPtr);
int pointerSize = factory.Target.PointerSize;
int slot = VirtualMethodSlotHelper.GetVirtualMethodSlot(factory, targetMethod);
Debug.Assert(slot != -1);
AddrMode jmpAddrMode = new AddrMode(encoder.TargetRegister.Result, null, EETypeNode.GetVTableOffset(pointerSize) + (slot * pointerSize), 0, AddrModeSize.Int64);
encoder.EmitJmpToAddrMode(ref jmpAddrMode);
}
}
break;
case ReadyToRunHelperId.IsInstanceOf:
{
TypeDesc target = (TypeDesc)Target;
encoder.EmitLEAQ(encoder.TargetRegister.Arg1, factory.NecessaryTypeSymbol(target));
encoder.EmitJMP(factory.ExternSymbol(JitHelper.GetCastingHelperNameForType(target, false)));
}
break;
case ReadyToRunHelperId.CastClass:
{
TypeDesc target = (TypeDesc)Target;
encoder.EmitLEAQ(encoder.TargetRegister.Arg1, factory.NecessaryTypeSymbol(target));
encoder.EmitJMP(factory.ExternSymbol(JitHelper.GetCastingHelperNameForType(target, true)));
}
break;
case ReadyToRunHelperId.NewArr1:
{
TypeDesc target = (TypeDesc)Target;
// TODO: Swap argument order instead
encoder.EmitMOV(encoder.TargetRegister.Arg1, encoder.TargetRegister.Arg0);
encoder.EmitLEAQ(encoder.TargetRegister.Arg0, factory.ConstructedTypeSymbol(target));
encoder.EmitJMP(factory.ExternSymbol(JitHelper.GetNewArrayHelperForType(target)));
}
break;
case ReadyToRunHelperId.GetNonGCStaticBase:
{
MetadataType target = (MetadataType)Target;
bool hasLazyStaticConstructor = factory.TypeSystemContext.HasLazyStaticConstructor(target);
encoder.EmitLEAQ(encoder.TargetRegister.Result, factory.TypeNonGCStaticsSymbol(target), hasLazyStaticConstructor ? NonGCStaticsNode.GetClassConstructorContextStorageSize(factory.Target, target) : 0);
if (!hasLazyStaticConstructor)
{
encoder.EmitRET();
}
else
{
// We need to trigger the cctor before returning the base. It is stored at the beginning of the non-GC statics region.
encoder.EmitLEAQ(encoder.TargetRegister.Arg0, factory.TypeNonGCStaticsSymbol(target));
AddrMode initialized = new AddrMode(encoder.TargetRegister.Arg0, null, factory.Target.PointerSize, 0, AddrModeSize.Int32);
encoder.EmitCMP(ref initialized, 1);
encoder.EmitRETIfEqual();
encoder.EmitMOV(encoder.TargetRegister.Arg1, encoder.TargetRegister.Result);
encoder.EmitJMP(factory.HelperEntrypoint(HelperEntrypoint.EnsureClassConstructorRunAndReturnNonGCStaticBase));
}
}
break;
case ReadyToRunHelperId.GetThreadStaticBase:
{
MetadataType target = (MetadataType)Target;
encoder.EmitLEAQ(encoder.TargetRegister.Arg2, factory.TypeThreadStaticIndex(target));
// First arg: address of the TypeManager slot that provides the helper with
// information about module index and the type manager instance (which is used
// for initialization on first access).
AddrMode loadFromArg2 = new AddrMode(encoder.TargetRegister.Arg2, null, 0, 0, AddrModeSize.Int64);
encoder.EmitMOV(encoder.TargetRegister.Arg0, ref loadFromArg2);
// Second arg: index of the type in the ThreadStatic section of the modules
AddrMode loadFromArg2AndDelta = new AddrMode(encoder.TargetRegister.Arg2, null, factory.Target.PointerSize, 0, AddrModeSize.Int64);
encoder.EmitMOV(encoder.TargetRegister.Arg1, ref loadFromArg2AndDelta);
if (!factory.TypeSystemContext.HasLazyStaticConstructor(target))
{
encoder.EmitJMP(factory.HelperEntrypoint(HelperEntrypoint.GetThreadStaticBaseForType));
}
else
{
encoder.EmitLEAQ(encoder.TargetRegister.Arg2, factory.TypeNonGCStaticsSymbol(target));
// TODO: performance optimization - inline the check verifying whether we need to trigger the cctor
encoder.EmitJMP(factory.HelperEntrypoint(HelperEntrypoint.EnsureClassConstructorRunAndReturnThreadStaticBase));
}
}
break;
case ReadyToRunHelperId.GetGCStaticBase:
{
MetadataType target = (MetadataType)Target;
encoder.EmitLEAQ(encoder.TargetRegister.Result, factory.TypeGCStaticsSymbol(target));
AddrMode loadFromRax = new AddrMode(encoder.TargetRegister.Result, null, 0, 0, AddrModeSize.Int64);
encoder.EmitMOV(encoder.TargetRegister.Result, ref loadFromRax);
encoder.EmitMOV(encoder.TargetRegister.Result, ref loadFromRax);
if (!factory.TypeSystemContext.HasLazyStaticConstructor(target))
{
encoder.EmitRET();
}
else
{
// We need to trigger the cctor before returning the base. It is stored at the beginning of the non-GC statics region.
encoder.EmitLEAQ(encoder.TargetRegister.Arg0, factory.TypeNonGCStaticsSymbol(target));
AddrMode initialized = new AddrMode(encoder.TargetRegister.Arg0, null, factory.Target.PointerSize, 0, AddrModeSize.Int32);
encoder.EmitCMP(ref initialized, 1);
encoder.EmitRETIfEqual();
encoder.EmitMOV(encoder.TargetRegister.Arg1, encoder.TargetRegister.Result);
encoder.EmitJMP(factory.HelperEntrypoint(HelperEntrypoint.EnsureClassConstructorRunAndReturnGCStaticBase));
}
}
break;
case ReadyToRunHelperId.DelegateCtor:
{
DelegateCreationInfo target = (DelegateCreationInfo)Target;
if (target.TargetNeedsVTableLookup)
{
AddrMode loadFromThisPtr = new AddrMode(encoder.TargetRegister.Arg1, null, 0, 0, AddrModeSize.Int64);
encoder.EmitMOV(encoder.TargetRegister.Arg2, ref loadFromThisPtr);
int slot = 0;
if (!relocsOnly)
{
slot = VirtualMethodSlotHelper.GetVirtualMethodSlot(factory, target.TargetMethod);
}
Debug.Assert(slot != -1);
AddrMode loadFromSlot = new AddrMode(encoder.TargetRegister.Arg2, null, EETypeNode.GetVTableOffset(factory.Target.PointerSize) + (slot * factory.Target.PointerSize), 0, AddrModeSize.Int64);
encoder.EmitMOV(encoder.TargetRegister.Arg2, ref loadFromSlot);
}
else
{
int delta = 0;
ISymbolNode targetMethodNode = target.GetTargetNode(factory);
if (targetMethodNode is IFatFunctionPointerNode)
{
delta = FatFunctionPointerConstants.Offset;
}
encoder.EmitLEAQ(encoder.TargetRegister.Arg2, target.GetTargetNode(factory), delta);
}
if (target.Thunk != null)
{
Debug.Assert(target.Constructor.Method.Signature.Length == 3);
encoder.EmitLEAQ(encoder.TargetRegister.Arg3, target.Thunk);
}
else
{
Debug.Assert(target.Constructor.Method.Signature.Length == 2);
}
encoder.EmitJMP(target.Constructor);
}
break;
case ReadyToRunHelperId.ResolveVirtualFunction:
{
MethodDesc targetMethod = (MethodDesc)Target;
if (targetMethod.OwningType.IsInterface)
{
encoder.EmitLEAQ(encoder.TargetRegister.Arg1, factory.InterfaceDispatchCell(targetMethod));
encoder.EmitJMP(factory.ExternSymbol("RhpResolveInterfaceMethod"));
}
else
{
if (relocsOnly)
{
break;
}
AddrMode loadFromThisPtr = new AddrMode(encoder.TargetRegister.Arg0, null, 0, 0, AddrModeSize.Int64);
encoder.EmitMOV(encoder.TargetRegister.Result, ref loadFromThisPtr);
int slot = VirtualMethodSlotHelper.GetVirtualMethodSlot(factory, targetMethod);
Debug.Assert(slot != -1);
AddrMode loadFromSlot = new AddrMode(encoder.TargetRegister.Result, null, EETypeNode.GetVTableOffset(factory.Target.PointerSize) + (slot * factory.Target.PointerSize), 0, AddrModeSize.Int64);
encoder.EmitMOV(encoder.TargetRegister.Result, ref loadFromSlot);
encoder.EmitRET();
}
}
break;
default:
throw new NotImplementedException();
}
}
protected override void EmitCode(NodeFactory factory, ref X64Emitter encoder, bool relocsOnly)
{
switch (Id)
{
case ReadyToRunHelperId.NewHelper:
{
TypeDesc target = (TypeDesc)Target;
encoder.EmitLEAQ(encoder.TargetRegister.Arg0, factory.ConstructedTypeSymbol(target));
encoder.EmitJMP(factory.ExternSymbol(JitHelper.GetNewObjectHelperForType(target)));
}
break;
case ReadyToRunHelperId.VirtualCall:
{
MethodDesc targetMethod = (MethodDesc)Target;
if (targetMethod.OwningType.IsInterface)
{
encoder.EmitLEAQ(Register.R10, factory.InterfaceDispatchCell((MethodDesc)Target));
AddrMode jmpAddrMode = new AddrMode(Register.R10, null, 0, 0, AddrModeSize.Int64);
encoder.EmitJmpToAddrMode(ref jmpAddrMode);
}
else
{
if (relocsOnly)
{
break;
}
AddrMode loadFromThisPtr = new AddrMode(encoder.TargetRegister.Arg0, null, 0, 0, AddrModeSize.Int64);
encoder.EmitMOV(encoder.TargetRegister.Result, ref loadFromThisPtr);
int pointerSize = factory.Target.PointerSize;
int slot = VirtualMethodSlotHelper.GetVirtualMethodSlot(factory, targetMethod);
Debug.Assert(slot != -1);
AddrMode jmpAddrMode = new AddrMode(encoder.TargetRegister.Result, null, EETypeNode.GetVTableOffset(pointerSize) + (slot * pointerSize), 0, AddrModeSize.Int64);
encoder.EmitJmpToAddrMode(ref jmpAddrMode);
}
}
break;
case ReadyToRunHelperId.IsInstanceOf:
{
TypeDesc target = (TypeDesc)Target;
encoder.EmitLEAQ(encoder.TargetRegister.Arg1, factory.NecessaryTypeSymbol(target));
encoder.EmitJMP(factory.ExternSymbol(JitHelper.GetCastingHelperNameForType(target, false)));
}
break;
case ReadyToRunHelperId.CastClass:
{
TypeDesc target = (TypeDesc)Target;
encoder.EmitLEAQ(encoder.TargetRegister.Arg1, factory.NecessaryTypeSymbol(target));
encoder.EmitJMP(factory.ExternSymbol(JitHelper.GetCastingHelperNameForType(target, true)));
}
break;
case ReadyToRunHelperId.NewArr1:
{
TypeDesc target = (TypeDesc)Target;
// TODO: Swap argument order instead
encoder.EmitMOV(encoder.TargetRegister.Arg1, encoder.TargetRegister.Arg0);
encoder.EmitLEAQ(encoder.TargetRegister.Arg0, factory.ConstructedTypeSymbol(target));
encoder.EmitJMP(factory.ExternSymbol(JitHelper.GetNewArrayHelperForType(target)));
}
break;
case ReadyToRunHelperId.GetNonGCStaticBase:
{
MetadataType target = (MetadataType)Target;
bool hasLazyStaticConstructor = factory.TypeSystemContext.HasLazyStaticConstructor(target);
encoder.EmitLEAQ(encoder.TargetRegister.Result, factory.TypeNonGCStaticsSymbol(target), hasLazyStaticConstructor ? NonGCStaticsNode.GetClassConstructorContextStorageSize(factory.Target, target) : 0);
if (!hasLazyStaticConstructor)
{
encoder.EmitRET();
}
else
{
// We need to trigger the cctor before returning the base. It is stored at the beginning of the non-GC statics region.
encoder.EmitLEAQ(encoder.TargetRegister.Arg0, factory.TypeNonGCStaticsSymbol(target));
AddrMode initialized = new AddrMode(encoder.TargetRegister.Arg0, null, factory.Target.PointerSize, 0, AddrModeSize.Int32);
encoder.EmitCMP(ref initialized, 1);
encoder.EmitRETIfEqual();
encoder.EmitMOV(encoder.TargetRegister.Arg1, encoder.TargetRegister.Result);
encoder.EmitJMP(factory.HelperEntrypoint(HelperEntrypoint.EnsureClassConstructorRunAndReturnNonGCStaticBase));
}
}
break;
case ReadyToRunHelperId.GetThreadStaticBase:
encoder.EmitINT3();
break;
case ReadyToRunHelperId.GetGCStaticBase:
{
MetadataType target = (MetadataType)Target;
encoder.EmitLEAQ(encoder.TargetRegister.Result, factory.TypeGCStaticsSymbol(target));
AddrMode loadFromRax = new AddrMode(encoder.TargetRegister.Result, null, 0, 0, AddrModeSize.Int64);
encoder.EmitMOV(encoder.TargetRegister.Result, ref loadFromRax);
encoder.EmitMOV(encoder.TargetRegister.Result, ref loadFromRax);
if (!factory.TypeSystemContext.HasLazyStaticConstructor(target))
{
encoder.EmitRET();
}
else
{
// We need to trigger the cctor before returning the base. It is stored at the beginning of the non-GC statics region.
encoder.EmitLEAQ(encoder.TargetRegister.Arg0, factory.TypeNonGCStaticsSymbol(target));
AddrMode initialized = new AddrMode(encoder.TargetRegister.Arg0, null, factory.Target.PointerSize, 0, AddrModeSize.Int32);
encoder.EmitCMP(ref initialized, 1);
encoder.EmitRETIfEqual();
encoder.EmitMOV(encoder.TargetRegister.Arg1, encoder.TargetRegister.Result);
encoder.EmitJMP(factory.HelperEntrypoint(HelperEntrypoint.EnsureClassConstructorRunAndReturnGCStaticBase));
}
}
break;
case ReadyToRunHelperId.DelegateCtor:
{
DelegateCreationInfo target = (DelegateCreationInfo)Target;
encoder.EmitLEAQ(encoder.TargetRegister.Arg2, target.Target);
if (target.Thunk != null)
{
Debug.Assert(target.Constructor.Method.Signature.Length == 3);
encoder.EmitLEAQ(encoder.TargetRegister.Arg3, target.Thunk);
}
else
{
Debug.Assert(target.Constructor.Method.Signature.Length == 2);
}
encoder.EmitJMP(target.Constructor);
}
break;
case ReadyToRunHelperId.ResolveVirtualFunction:
{
MethodDesc targetMethod = (MethodDesc)Target;
if (targetMethod.OwningType.IsInterface)
{
encoder.EmitLEAQ(encoder.TargetRegister.Arg1, factory.InterfaceDispatchCell(targetMethod));
encoder.EmitJMP(factory.ExternSymbol("RhpResolveInterfaceMethod"));
}
else
{
if (relocsOnly)
{
break;
}
AddrMode loadFromThisPtr = new AddrMode(encoder.TargetRegister.Arg0, null, 0, 0, AddrModeSize.Int64);
encoder.EmitMOV(encoder.TargetRegister.Result, ref loadFromThisPtr);
int slot = VirtualMethodSlotHelper.GetVirtualMethodSlot(factory, targetMethod);
Debug.Assert(slot != -1);
AddrMode loadFromSlot = new AddrMode(encoder.TargetRegister.Result, null, EETypeNode.GetVTableOffset(factory.Target.PointerSize) + (slot * factory.Target.PointerSize), 0, AddrModeSize.Int64);
encoder.EmitMOV(encoder.TargetRegister.Result, ref loadFromSlot);
encoder.EmitRET();
}
}
break;
case ReadyToRunHelperId.ResolveGenericVirtualMethod:
encoder.EmitINT3();
break;
default:
throw new NotImplementedException();
}
}
protected override void EmitCode(NodeFactory factory, ref X64Emitter encoder, bool relocsOnly)
{
switch (Id)
{
case ReadyToRunHelperId.NewHelper:
{
TypeDesc target = (TypeDesc)Target;
encoder.EmitLEAQ(encoder.TargetRegister.Arg0, factory.ConstructedTypeSymbol(target));
encoder.EmitJMP(factory.ExternSymbol(JitHelper.GetNewObjectHelperForType(target)));
}
break;
case ReadyToRunHelperId.VirtualCall:
{
MethodDesc targetMethod = (MethodDesc)Target;
if (targetMethod.OwningType.IsInterface)
{
encoder.EmitLEAQ(Register.R10, factory.InterfaceDispatchCell((MethodDesc)Target));
AddrMode jmpAddrMode = new AddrMode(Register.R10, null, 0, 0, AddrModeSize.Int64);
encoder.EmitJmpToAddrMode(ref jmpAddrMode);
}
else
{
if (relocsOnly)
{
break;
}
AddrMode loadFromThisPtr = new AddrMode(encoder.TargetRegister.Arg0, null, 0, 0, AddrModeSize.Int64);
encoder.EmitMOV(encoder.TargetRegister.Result, ref loadFromThisPtr);
int pointerSize = factory.Target.PointerSize;
int slot = VirtualMethodSlotHelper.GetVirtualMethodSlot(factory, targetMethod);
Debug.Assert(slot != -1);
AddrMode jmpAddrMode = new AddrMode(encoder.TargetRegister.Result, null, EETypeNode.GetVTableOffset(pointerSize) + (slot * pointerSize), 0, AddrModeSize.Int64);
encoder.EmitJmpToAddrMode(ref jmpAddrMode);
}
}
break;
case ReadyToRunHelperId.IsInstanceOf:
{
TypeDesc target = (TypeDesc)Target;
encoder.EmitLEAQ(encoder.TargetRegister.Arg1, factory.NecessaryTypeSymbol(target));
encoder.EmitJMP(factory.ExternSymbol(JitHelper.GetCastingHelperNameForType(target, false)));
}
break;
case ReadyToRunHelperId.CastClass:
{
TypeDesc target = (TypeDesc)Target;
encoder.EmitLEAQ(encoder.TargetRegister.Arg1, factory.NecessaryTypeSymbol(target));
encoder.EmitJMP(factory.ExternSymbol(JitHelper.GetCastingHelperNameForType(target, true)));
}
break;
case ReadyToRunHelperId.NewArr1:
{
TypeDesc target = (TypeDesc)Target;
// TODO: Swap argument order instead
encoder.EmitMOV(encoder.TargetRegister.Arg1, encoder.TargetRegister.Arg0);
encoder.EmitLEAQ(encoder.TargetRegister.Arg0, factory.ConstructedTypeSymbol(target));
encoder.EmitJMP(factory.ExternSymbol(JitHelper.GetNewArrayHelperForType(target)));
}
break;
case ReadyToRunHelperId.GetNonGCStaticBase:
{
MetadataType target = (MetadataType)Target;
bool hasLazyStaticConstructor = factory.TypeSystemContext.HasLazyStaticConstructor(target);
encoder.EmitLEAQ(encoder.TargetRegister.Result, factory.TypeNonGCStaticsSymbol(target), hasLazyStaticConstructor ? NonGCStaticsNode.GetClassConstructorContextStorageSize(factory.Target, target) : 0);
if (!hasLazyStaticConstructor)
{
encoder.EmitRET();
}
else
{
// We need to trigger the cctor before returning the base. It is stored at the beginning of the non-GC statics region.
encoder.EmitLEAQ(encoder.TargetRegister.Arg0, factory.TypeNonGCStaticsSymbol(target));
AddrMode initialized = new AddrMode(encoder.TargetRegister.Arg0, null, factory.Target.PointerSize, 0, AddrModeSize.Int32);
encoder.EmitCMP(ref initialized, 1);
encoder.EmitRETIfEqual();
encoder.EmitMOV(encoder.TargetRegister.Arg1, encoder.TargetRegister.Result);
encoder.EmitJMP(factory.HelperEntrypoint(HelperEntrypoint.EnsureClassConstructorRunAndReturnNonGCStaticBase));
}
}
break;
case ReadyToRunHelperId.GetThreadStaticBase:
encoder.EmitINT3();
break;
case ReadyToRunHelperId.GetGCStaticBase:
{
MetadataType target = (MetadataType)Target;
encoder.EmitLEAQ(encoder.TargetRegister.Result, factory.TypeGCStaticsSymbol(target));
AddrMode loadFromRax = new AddrMode(encoder.TargetRegister.Result, null, 0, 0, AddrModeSize.Int64);
encoder.EmitMOV(encoder.TargetRegister.Result, ref loadFromRax);
encoder.EmitMOV(encoder.TargetRegister.Result, ref loadFromRax);
if (!factory.TypeSystemContext.HasLazyStaticConstructor(target))
{
encoder.EmitRET();
}
else
{
// We need to trigger the cctor before returning the base. It is stored at the beginning of the non-GC statics region.
encoder.EmitLEAQ(encoder.TargetRegister.Arg0, factory.TypeNonGCStaticsSymbol(target));
AddrMode initialized = new AddrMode(encoder.TargetRegister.Arg0, null, factory.Target.PointerSize, 0, AddrModeSize.Int32);
encoder.EmitCMP(ref initialized, 1);
encoder.EmitRETIfEqual();
encoder.EmitMOV(encoder.TargetRegister.Arg1, encoder.TargetRegister.Result);
encoder.EmitJMP(factory.HelperEntrypoint(HelperEntrypoint.EnsureClassConstructorRunAndReturnGCStaticBase));
}
}
break;
case ReadyToRunHelperId.DelegateCtor:
{
DelegateCreationInfo target = (DelegateCreationInfo)Target;
encoder.EmitLEAQ(encoder.TargetRegister.Arg2, target.Target);
if (target.Thunk != null)
{
Debug.Assert(target.Constructor.Method.Signature.Length == 3);
encoder.EmitLEAQ(encoder.TargetRegister.Arg3, target.Thunk);
}
else
{
Debug.Assert(target.Constructor.Method.Signature.Length == 2);
}
encoder.EmitJMP(target.Constructor);
}
break;
case ReadyToRunHelperId.ResolveVirtualFunction:
{
MethodDesc targetMethod = (MethodDesc)Target;
if (targetMethod.OwningType.IsInterface)
{
encoder.EmitLEAQ(encoder.TargetRegister.Arg1, factory.InterfaceDispatchCell(targetMethod));
encoder.EmitJMP(factory.ExternSymbol("RhpResolveInterfaceMethod"));
}
else
{
if (relocsOnly)
{
break;
}
AddrMode loadFromThisPtr = new AddrMode(encoder.TargetRegister.Arg0, null, 0, 0, AddrModeSize.Int64);
encoder.EmitMOV(encoder.TargetRegister.Result, ref loadFromThisPtr);
int slot = VirtualMethodSlotHelper.GetVirtualMethodSlot(factory, targetMethod);
Debug.Assert(slot != -1);
AddrMode loadFromSlot = new AddrMode(encoder.TargetRegister.Result, null, EETypeNode.GetVTableOffset(factory.Target.PointerSize) + (slot * factory.Target.PointerSize), 0, AddrModeSize.Int64);
encoder.EmitMOV(encoder.TargetRegister.Result, ref loadFromSlot);
encoder.EmitRET();
}
}
break;
case ReadyToRunHelperId.GenericLookupFromThis:
{
int pointerSize = factory.Target.PointerSize;
var lookupInfo = (GenericLookupDescriptor)Target;
// Arg0 points to the EEType
// Locate the VTable slot that points to the dictionary
int vtableSlot = 0;
if (!relocsOnly)
{
vtableSlot = VirtualMethodSlotHelper.GetGenericDictionarySlot(factory, (TypeDesc)lookupInfo.CanonicalOwner);
}
int slotOffset = EETypeNode.GetVTableOffset(pointerSize) + (vtableSlot * pointerSize);
// Load the dictionary pointer from the VTable
AddrMode loadDictionary = new AddrMode(encoder.TargetRegister.Arg0, null, slotOffset, 0, AddrModeSize.Int64);
encoder.EmitMOV(encoder.TargetRegister.Arg0, ref loadDictionary);
// What's left now is the actual dictionary lookup
goto case ReadyToRunHelperId.GenericLookupFromDictionary;
}
case ReadyToRunHelperId.GenericLookupFromDictionary:
{
var lookupInfo = (GenericLookupDescriptor)Target;
// Find the generic dictionary slot
int dictionarySlot = 0;
if (!relocsOnly)
{
// The concrete slot won't be known until we're emitting data.
dictionarySlot = factory.GenericDictionaryLayout(lookupInfo.CanonicalOwner).GetSlotForEntry(lookupInfo.Signature);
}
// Load the generic dictionary cell
AddrMode loadEntry = new AddrMode(
encoder.TargetRegister.Arg0, null, dictionarySlot * factory.Target.PointerSize, 0, AddrModeSize.Int64);
encoder.EmitMOV(encoder.TargetRegister.Result, ref loadEntry);
encoder.EmitRET();
}
break;
default:
throw new NotImplementedException();
}
}
private void ImportCall(ILOpcode opcode, int token)
{
// Strip runtime determined characteristics off of the method (because that's how RyuJIT operates)
var runtimeDeterminedMethod = (MethodDesc)_methodIL.GetObject(token);
MethodDesc method = runtimeDeterminedMethod;
if (runtimeDeterminedMethod.IsRuntimeDeterminedExactMethod)
{
method = runtimeDeterminedMethod.GetCanonMethodTarget(CanonicalFormKind.Specific);
}
if (method.IsRawPInvoke())
{
// Raw P/invokes don't have any dependencies.
return;
}
string reason = null;
switch (opcode)
{
case ILOpcode.newobj:
reason = "newobj"; break;
case ILOpcode.call:
reason = "call"; break;
case ILOpcode.callvirt:
reason = "callvirt"; break;
case ILOpcode.ldftn:
reason = "ldftn"; break;
case ILOpcode.ldvirtftn:
reason = "ldvirtftn"; break;
default:
Debug.Assert(false); break;
}
if (opcode == ILOpcode.newobj)
{
TypeDesc owningType = runtimeDeterminedMethod.OwningType;
if (owningType.IsString)
{
// String .ctor handled specially below
}
else if (owningType.IsGCPointer)
{
if (owningType.IsRuntimeDeterminedSubtype)
{
_dependencies.Add(GetGenericLookupHelper(ReadyToRunHelperId.TypeHandle, owningType), reason);
}
else
{
_dependencies.Add(_factory.ConstructedTypeSymbol(owningType), reason);
}
if (owningType.IsMdArray)
{
_dependencies.Add(GetHelperEntrypoint(ReadyToRunHelper.NewMultiDimArr_NonVarArg), reason);
return;
}
else
{
_dependencies.Add(GetHelperEntrypoint(ReadyToRunHelper.NewObject), reason);
}
}
if (owningType.IsDelegate)
{
// If this is a verifiable delegate construction sequence, the previous instruction is a ldftn/ldvirtftn
if (_previousInstructionOffset >= 0 && _ilBytes[_previousInstructionOffset] == (byte)ILOpcode.prefix1)
{
// TODO: for ldvirtftn we need to also check for the `dup` instruction, otherwise this is a normal newobj.
ILOpcode previousOpcode = (ILOpcode)(0x100 + _ilBytes[_previousInstructionOffset + 1]);
if (previousOpcode == ILOpcode.ldvirtftn || previousOpcode == ILOpcode.ldftn)
{
int delTargetToken = ReadILTokenAt(_previousInstructionOffset + 2);
var delTargetMethod = (MethodDesc)_methodIL.GetObject(delTargetToken);
TypeDesc canonDelegateType = method.OwningType.ConvertToCanonForm(CanonicalFormKind.Specific);
DelegateCreationInfo info = _compilation.GetDelegateCtor(canonDelegateType, delTargetMethod, previousOpcode == ILOpcode.ldvirtftn);
if (info.NeedsRuntimeLookup)
{
_dependencies.Add(GetGenericLookupHelper(ReadyToRunHelperId.DelegateCtor, info), reason);
}
else
{
_dependencies.Add(_factory.ReadyToRunHelper(ReadyToRunHelperId.DelegateCtor, info), reason);
}
return;
}
}
}
}
if (method.OwningType.IsDelegate && method.Name == "Invoke")
{
// TODO: might not want to do this if scanning for reflection.
// This is expanded as an intrinsic, not a function call.
return;
}
if (method.IsIntrinsic)
{
if (IsRuntimeHelpersInitializeArray(method))
{
if (_previousInstructionOffset >= 0 && _ilBytes[_previousInstructionOffset] == (byte)ILOpcode.ldtoken)
{
return;
}
}
if (IsRuntimeTypeHandleGetValueInternal(method))
{
if (_previousInstructionOffset >= 0 && _ilBytes[_previousInstructionOffset] == (byte)ILOpcode.ldtoken)
{
return;
}
}
if (IsActivatorDefaultConstructorOf(method))
{
if (runtimeDeterminedMethod.IsRuntimeDeterminedExactMethod)
{
_dependencies.Add(GetGenericLookupHelper(ReadyToRunHelperId.DefaultConstructor, runtimeDeterminedMethod.Instantiation[0]), reason);
}
else
{
MethodDesc ctor = method.Instantiation[0].GetDefaultConstructor();
if (ctor == null)
{
MetadataType activatorType = _compilation.TypeSystemContext.SystemModule.GetKnownType("System", "Activator");
MetadataType classWithMissingCtor = activatorType.GetKnownNestedType("ClassWithMissingConstructor");
ctor = classWithMissingCtor.GetParameterlessConstructor();
}
_dependencies.Add(_factory.CanonicalEntrypoint(ctor), reason);
}
return;
}
if (method.OwningType.IsByReferenceOfT && (method.IsConstructor || method.Name == "get_Value"))
{
return;
}
if (IsEETypePtrOf(method))
{
if (runtimeDeterminedMethod.IsRuntimeDeterminedExactMethod)
{
_dependencies.Add(GetGenericLookupHelper(ReadyToRunHelperId.TypeHandle, runtimeDeterminedMethod.Instantiation[0]), reason);
}
else
{
_dependencies.Add(_factory.ConstructedTypeSymbol(method.Instantiation[0]), reason);
}
return;
}
}
TypeDesc exactType = method.OwningType;
if (method.IsNativeCallable && (opcode != ILOpcode.ldftn && opcode != ILOpcode.ldvirtftn))
{
ThrowHelper.ThrowInvalidProgramException(ExceptionStringID.InvalidProgramNativeCallable, method);
}
bool resolvedConstraint = false;
bool forceUseRuntimeLookup = false;
MethodDesc methodAfterConstraintResolution = method;
if (_constrained != null)
{
// We have a "constrained." call. Try a partial resolve of the constraint call. Note that this
// will not necessarily resolve the call exactly, since we might be compiling
// shared generic code - it may just resolve it to a candidate suitable for
// JIT compilation, and require a runtime lookup for the actual code pointer
// to call.
TypeDesc constrained = _constrained;
if (constrained.IsRuntimeDeterminedSubtype)
{
constrained = constrained.ConvertToCanonForm(CanonicalFormKind.Specific);
}
MethodDesc directMethod = constrained.GetClosestDefType().TryResolveConstraintMethodApprox(method.OwningType, method, out forceUseRuntimeLookup);
if (directMethod == null && constrained.IsEnum)
{
// Constrained calls to methods on enum methods resolve to System.Enum's methods. System.Enum is a reference
// type though, so we would fail to resolve and box. We have a special path for those to avoid boxing.
directMethod = _compilation.TypeSystemContext.TryResolveConstrainedEnumMethod(constrained, method);
}
if (directMethod != null)
{
// Either
// 1. no constraint resolution at compile time (!directMethod)
// OR 2. no code sharing lookup in call
// OR 3. we have have resolved to an instantiating stub
methodAfterConstraintResolution = directMethod;
Debug.Assert(!methodAfterConstraintResolution.OwningType.IsInterface);
resolvedConstraint = true;
exactType = constrained;
}
else if (constrained.IsValueType)
{
// We'll need to box `this`. Note we use _constrained here, because the other one is canonical.
AddBoxingDependencies(_constrained, reason);
}
}
MethodDesc targetMethod = methodAfterConstraintResolution;
bool exactContextNeedsRuntimeLookup;
if (targetMethod.HasInstantiation)
{
exactContextNeedsRuntimeLookup = targetMethod.IsSharedByGenericInstantiations;
}
else
{
exactContextNeedsRuntimeLookup = exactType.IsCanonicalSubtype(CanonicalFormKind.Any);
}
//
// Determine whether to perform direct call
//
bool directCall = false;
if (targetMethod.Signature.IsStatic)
{
// Static methods are always direct calls
directCall = true;
}
else if (targetMethod.OwningType.IsInterface)
{
// Force all interface calls to be interpreted as if they are virtual.
directCall = false;
}
else if ((opcode != ILOpcode.callvirt && opcode != ILOpcode.ldvirtftn) || resolvedConstraint)
{
directCall = true;
}
else
{
if (!targetMethod.IsVirtual || targetMethod.IsFinal || targetMethod.OwningType.IsSealed())
{
directCall = true;
}
}
bool allowInstParam = opcode != ILOpcode.ldvirtftn && opcode != ILOpcode.ldftn;
if (directCall && !allowInstParam && targetMethod.GetCanonMethodTarget(CanonicalFormKind.Specific).RequiresInstArg())
{
// Needs a single address to call this method but the method needs a hidden argument.
// We need a fat function pointer for this that captures both things.
if (exactContextNeedsRuntimeLookup)
{
_dependencies.Add(GetGenericLookupHelper(ReadyToRunHelperId.MethodEntry, runtimeDeterminedMethod), reason);
}
else
{
_dependencies.Add(_factory.FatFunctionPointer(runtimeDeterminedMethod), reason);
}
}
else if (directCall)
{
bool referencingArrayAddressMethod = false;
if (targetMethod.IsIntrinsic)
{
// If this is an intrinsic method with a callsite-specific expansion, this will replace
// the method with a method the intrinsic expands into. If it's not the special intrinsic,
// method stays unchanged.
targetMethod = _compilation.ExpandIntrinsicForCallsite(targetMethod, _canonMethod);
// Array address method requires special dependency tracking.
referencingArrayAddressMethod = targetMethod.IsArrayAddressMethod();
}
MethodDesc concreteMethod = targetMethod;
targetMethod = targetMethod.GetCanonMethodTarget(CanonicalFormKind.Specific);
if (targetMethod.IsConstructor && targetMethod.OwningType.IsString)
{
_dependencies.Add(_factory.StringAllocator(targetMethod), reason);
}
else if (exactContextNeedsRuntimeLookup)
{
if (targetMethod.IsSharedByGenericInstantiations && !resolvedConstraint && !referencingArrayAddressMethod)
{
ISymbolNode instParam = null;
if (targetMethod.RequiresInstMethodDescArg())
{
instParam = GetGenericLookupHelper(ReadyToRunHelperId.MethodDictionary, runtimeDeterminedMethod);
}
else if (targetMethod.RequiresInstMethodTableArg())
{
bool hasHiddenParameter = true;
if (targetMethod.IsIntrinsic)
{
if (_factory.TypeSystemContext.IsSpecialUnboxingThunkTargetMethod(targetMethod))
{
hasHiddenParameter = false;
}
}
if (hasHiddenParameter)
{
instParam = GetGenericLookupHelper(ReadyToRunHelperId.TypeHandle, runtimeDeterminedMethod.OwningType);
}
}
if (instParam != null)
{
_dependencies.Add(instParam, reason);
}
_dependencies.Add(_factory.CanonicalEntrypoint(targetMethod), reason);
}
else
{
Debug.Assert(!forceUseRuntimeLookup);
_dependencies.Add(_factory.MethodEntrypoint(targetMethod), reason);
if (targetMethod.RequiresInstMethodTableArg() && resolvedConstraint)
{
if (_constrained.IsRuntimeDeterminedSubtype)
{
_dependencies.Add(GetGenericLookupHelper(ReadyToRunHelperId.TypeHandle, _constrained), reason);
}
else
{
_dependencies.Add(_factory.ConstructedTypeSymbol(_constrained), reason);
}
}
if (referencingArrayAddressMethod && !_isReadOnly)
{
// Address method is special - it expects an instantiation argument, unless a readonly prefix was applied.
_dependencies.Add(GetGenericLookupHelper(ReadyToRunHelperId.TypeHandle, runtimeDeterminedMethod.OwningType), reason);
}
}
}
else
{
ISymbolNode instParam = null;
if (targetMethod.RequiresInstMethodDescArg())
{
instParam = _compilation.NodeFactory.MethodGenericDictionary(concreteMethod);
}
else if (targetMethod.RequiresInstMethodTableArg() || (referencingArrayAddressMethod && !_isReadOnly))
{
// Ask for a constructed type symbol because we need the vtable to get to the dictionary
instParam = _compilation.NodeFactory.ConstructedTypeSymbol(concreteMethod.OwningType);
}
if (instParam != null)
{
_dependencies.Add(instParam, reason);
if (!referencingArrayAddressMethod)
{
_dependencies.Add(_compilation.NodeFactory.ShadowConcreteMethod(concreteMethod), reason);
}
else
{
// We don't want array Address method to be modeled in the generic dependency analysis.
// The method doesn't actually have runtime determined dependencies (won't do
// any generic lookups).
_dependencies.Add(_compilation.NodeFactory.MethodEntrypoint(targetMethod), reason);
}
}
else if (targetMethod.AcquiresInstMethodTableFromThis())
{
_dependencies.Add(_compilation.NodeFactory.ShadowConcreteMethod(concreteMethod), reason);
}
else
{
_dependencies.Add(_compilation.NodeFactory.MethodEntrypoint(targetMethod), reason);
}
}
}
else if (method.HasInstantiation)
{
// Generic virtual method call
if (exactContextNeedsRuntimeLookup)
{
_dependencies.Add(GetGenericLookupHelper(ReadyToRunHelperId.MethodHandle, runtimeDeterminedMethod), reason);
}
else
{
_dependencies.Add(_factory.RuntimeMethodHandle(runtimeDeterminedMethod), reason);
}
_dependencies.Add(GetHelperEntrypoint(ReadyToRunHelper.GVMLookupForSlot), reason);
}
else if (method.OwningType.IsInterface)
{
if (exactContextNeedsRuntimeLookup)
{
_dependencies.Add(GetGenericLookupHelper(ReadyToRunHelperId.VirtualDispatchCell, runtimeDeterminedMethod), reason);
}
else
{
_dependencies.Add(_factory.InterfaceDispatchCell(method), reason);
}
}
else if (_compilation.HasFixedSlotVTable(method.OwningType))
{
// No dependencies: virtual call through the vtable
}
else
{
MethodDesc slotDefiningMethod = targetMethod.IsNewSlot ?
targetMethod : MetadataVirtualMethodAlgorithm.FindSlotDefiningMethodForVirtualMethod(targetMethod).Normalize();
_dependencies.Add(_factory.VirtualMethodUse(slotDefiningMethod), reason);
}
}
protected override void EmitCode(NodeFactory factory, ref ARM64Emitter encoder, bool relocsOnly)
{
switch (Id)
{
case ReadyToRunHelperId.VirtualCall:
{
MethodDesc targetMethod = (MethodDesc)Target;
Debug.Assert(!targetMethod.OwningType.IsInterface);
Debug.Assert(!targetMethod.CanMethodBeInSealedVTable());
int pointerSize = factory.Target.PointerSize;
int slot = 0;
if (!relocsOnly)
{
slot = VirtualMethodSlotHelper.GetVirtualMethodSlot(factory, targetMethod, targetMethod.OwningType);
Debug.Assert(slot != -1);
}
encoder.EmitLDR(encoder.TargetRegister.IntraProcedureCallScratch1, encoder.TargetRegister.Arg0, 0);
encoder.EmitLDR(encoder.TargetRegister.IntraProcedureCallScratch1, encoder.TargetRegister.IntraProcedureCallScratch1,
EETypeNode.GetVTableOffset(pointerSize) + (slot * pointerSize));
encoder.EmitJMP(encoder.TargetRegister.IntraProcedureCallScratch1);
}
break;
case ReadyToRunHelperId.GetNonGCStaticBase:
{
MetadataType target = (MetadataType)Target;
bool hasLazyStaticConstructor = factory.PreinitializationManager.HasLazyStaticConstructor(target);
encoder.EmitMOV(encoder.TargetRegister.Result, factory.TypeNonGCStaticsSymbol(target));
if (!hasLazyStaticConstructor)
{
encoder.EmitRET();
}
else
{
// We need to trigger the cctor before returning the base. It is stored at the beginning of the non-GC statics region.
encoder.EmitSUB(encoder.TargetRegister.Arg3, encoder.TargetRegister.Result, NonGCStaticsNode.GetClassConstructorContextSize(factory.Target));
encoder.EmitLDR(encoder.TargetRegister.Arg2, encoder.TargetRegister.Arg3, (short)factory.Target.PointerSize);
encoder.EmitCMP(encoder.TargetRegister.Arg2, 1);
encoder.EmitRETIfEqual();
encoder.EmitMOV(encoder.TargetRegister.Arg1, encoder.TargetRegister.Result);
encoder.EmitMOV(encoder.TargetRegister.Arg0, encoder.TargetRegister.Arg3);
encoder.EmitJMP(factory.HelperEntrypoint(HelperEntrypoint.EnsureClassConstructorRunAndReturnNonGCStaticBase));
}
}
break;
case ReadyToRunHelperId.GetThreadStaticBase:
{
MetadataType target = (MetadataType)Target;
encoder.EmitMOV(encoder.TargetRegister.Arg2, factory.TypeThreadStaticIndex(target));
// First arg: address of the TypeManager slot that provides the helper with
// information about module index and the type manager instance (which is used
// for initialization on first access).
encoder.EmitLDR(encoder.TargetRegister.Arg0, encoder.TargetRegister.Arg2);
// Second arg: index of the type in the ThreadStatic section of the modules
encoder.EmitLDR(encoder.TargetRegister.Arg1, encoder.TargetRegister.Arg2, factory.Target.PointerSize);
if (!factory.PreinitializationManager.HasLazyStaticConstructor(target))
{
encoder.EmitJMP(factory.HelperEntrypoint(HelperEntrypoint.GetThreadStaticBaseForType));
}
else
{
encoder.EmitMOV(encoder.TargetRegister.Arg2, factory.TypeNonGCStaticsSymbol(target));
encoder.EmitSUB(encoder.TargetRegister.Arg2, NonGCStaticsNode.GetClassConstructorContextSize(factory.Target));
encoder.EmitLDR(encoder.TargetRegister.Arg3, encoder.TargetRegister.Arg2, (short)factory.Target.PointerSize);
encoder.EmitCMP(encoder.TargetRegister.Arg3, 1);
encoder.EmitJE(factory.HelperEntrypoint(HelperEntrypoint.GetThreadStaticBaseForType));
encoder.EmitJMP(factory.HelperEntrypoint(HelperEntrypoint.EnsureClassConstructorRunAndReturnThreadStaticBase));
}
}
break;
case ReadyToRunHelperId.GetGCStaticBase:
{
MetadataType target = (MetadataType)Target;
encoder.EmitMOV(encoder.TargetRegister.Result, factory.TypeGCStaticsSymbol(target));
encoder.EmitLDR(encoder.TargetRegister.Result, encoder.TargetRegister.Result);
if (!factory.PreinitializationManager.HasLazyStaticConstructor(target))
{
encoder.EmitRET();
}
else
{
// We need to trigger the cctor before returning the base. It is stored at the beginning of the non-GC statics region.
encoder.EmitMOV(encoder.TargetRegister.Arg2, factory.TypeNonGCStaticsSymbol(target));
encoder.EmitSUB(encoder.TargetRegister.Arg2, NonGCStaticsNode.GetClassConstructorContextSize(factory.Target));
encoder.EmitLDR(encoder.TargetRegister.Arg3, encoder.TargetRegister.Arg2, (short)factory.Target.PointerSize);
encoder.EmitCMP(encoder.TargetRegister.Arg3, 1);
encoder.EmitRETIfEqual();
encoder.EmitMOV(encoder.TargetRegister.Arg1, encoder.TargetRegister.Result);
encoder.EmitMOV(encoder.TargetRegister.Arg0, encoder.TargetRegister.Arg2);
encoder.EmitJMP(factory.HelperEntrypoint(HelperEntrypoint.EnsureClassConstructorRunAndReturnGCStaticBase));
}
}
break;
case ReadyToRunHelperId.DelegateCtor:
{
DelegateCreationInfo target = (DelegateCreationInfo)Target;
if (target.TargetNeedsVTableLookup)
{
Debug.Assert(!target.TargetMethod.CanMethodBeInSealedVTable());
encoder.EmitLDR(encoder.TargetRegister.Arg2, encoder.TargetRegister.Arg1);
int slot = 0;
if (!relocsOnly)
{
slot = VirtualMethodSlotHelper.GetVirtualMethodSlot(factory, target.TargetMethod, target.TargetMethod.OwningType);
}
Debug.Assert(slot != -1);
encoder.EmitLDR(encoder.TargetRegister.Arg2, encoder.TargetRegister.Arg2,
EETypeNode.GetVTableOffset(factory.Target.PointerSize) + (slot * factory.Target.PointerSize));
}
else
{
encoder.EmitMOV(encoder.TargetRegister.Arg2, target.GetTargetNode(factory));
}
if (target.Thunk != null)
{
Debug.Assert(target.Constructor.Method.Signature.Length == 3);
encoder.EmitMOV(encoder.TargetRegister.Arg3, target.Thunk);
}
else
{
Debug.Assert(target.Constructor.Method.Signature.Length == 2);
}
encoder.EmitJMP(target.Constructor);
}
break;
case ReadyToRunHelperId.ResolveVirtualFunction:
{
MethodDesc targetMethod = (MethodDesc)Target;
if (targetMethod.OwningType.IsInterface)
{
// Not tested
encoder.EmitINT3();
encoder.EmitMOV(encoder.TargetRegister.Arg1, factory.InterfaceDispatchCell(targetMethod));
encoder.EmitJMP(factory.ExternSymbol("RhpResolveInterfaceMethod"));
}
else
{
if (relocsOnly)
{
break;
}
encoder.EmitLDR(encoder.TargetRegister.Result, encoder.TargetRegister.Arg0);
Debug.Assert(!targetMethod.CanMethodBeInSealedVTable());
int slot = VirtualMethodSlotHelper.GetVirtualMethodSlot(factory, targetMethod, targetMethod.OwningType);
Debug.Assert(slot != -1);
encoder.EmitLDR(encoder.TargetRegister.Result, encoder.TargetRegister.Result,
((short)(EETypeNode.GetVTableOffset(factory.Target.PointerSize) + (slot * factory.Target.PointerSize))));
encoder.EmitRET();
}
}
break;
default:
throw new NotImplementedException();
}
}
protected override void EmitCode(NodeFactory factory, ref ARMEmitter encoder, bool relocsOnly)
{
switch (Id)
{
case ReadyToRunHelperId.NewHelper:
{
TypeDesc target = (TypeDesc)Target;
encoder.EmitMOV(encoder.TargetRegister.Arg0, factory.ConstructedTypeSymbol(target));
encoder.EmitJMP(factory.ExternSymbol(JitHelper.GetNewObjectHelperForType(target)));
}
break;
case ReadyToRunHelperId.VirtualCall:
{
MethodDesc targetMethod = (MethodDesc)Target;
ARMDebug.EmitHelperNYIAssert(factory, ref encoder, ReadyToRunHelperId.VirtualCall);
}
break;
case ReadyToRunHelperId.IsInstanceOf:
{
TypeDesc target = (TypeDesc)Target;
encoder.EmitMOV(encoder.TargetRegister.Arg1, factory.NecessaryTypeSymbol(target));
encoder.EmitJMP(factory.ExternSymbol(JitHelper.GetCastingHelperNameForType(target, false)));
}
break;
case ReadyToRunHelperId.CastClass:
{
TypeDesc target = (TypeDesc)Target;
encoder.EmitMOV(encoder.TargetRegister.Arg1, factory.NecessaryTypeSymbol(target));
encoder.EmitJMP(factory.ExternSymbol(JitHelper.GetCastingHelperNameForType(target, true)));
}
break;
case ReadyToRunHelperId.NewArr1:
{
TypeDesc target = (TypeDesc)Target;
encoder.EmitMOV(encoder.TargetRegister.Arg1, encoder.TargetRegister.Arg0);
encoder.EmitMOV(encoder.TargetRegister.Arg0, factory.ConstructedTypeSymbol(target));
encoder.EmitJMP(factory.ExternSymbol(JitHelper.GetNewArrayHelperForType(target)));
}
break;
case ReadyToRunHelperId.GetNonGCStaticBase:
{
MetadataType target = (MetadataType)Target;
ARMDebug.EmitHelperNYIAssert(factory, ref encoder, ReadyToRunHelperId.GetNonGCStaticBase);
}
break;
case ReadyToRunHelperId.GetThreadStaticBase:
{
MetadataType target = (MetadataType)Target;
ARMDebug.EmitHelperNYIAssert(factory, ref encoder, ReadyToRunHelperId.GetThreadStaticBase);
}
break;
case ReadyToRunHelperId.GetGCStaticBase:
{
MetadataType target = (MetadataType)Target;
ARMDebug.EmitHelperNYIAssert(factory, ref encoder, ReadyToRunHelperId.GetGCStaticBase);
}
break;
case ReadyToRunHelperId.DelegateCtor:
{
DelegateCreationInfo target = (DelegateCreationInfo)Target;
ARMDebug.EmitHelperNYIAssert(factory, ref encoder, ReadyToRunHelperId.DelegateCtor);
}
break;
case ReadyToRunHelperId.ResolveVirtualFunction:
{
MethodDesc targetMethod = (MethodDesc)Target;
ARMDebug.EmitHelperNYIAssert(factory, ref encoder, ReadyToRunHelperId.ResolveVirtualFunction);
}
break;
default:
throw new NotImplementedException();
}
}
private void ImportCall(ILOpcode opcode, int token)
{
// Strip runtime determined characteristics off of the method (because that's how RyuJIT operates)
var runtimeDeterminedMethod = (MethodDesc)_methodIL.GetObject(token);
MethodDesc method = runtimeDeterminedMethod;
if (runtimeDeterminedMethod.IsRuntimeDeterminedExactMethod)
{
method = runtimeDeterminedMethod.GetCanonMethodTarget(CanonicalFormKind.Specific);
}
if (method.IsRawPInvoke())
{
// Raw P/invokes don't have any dependencies.
return;
}
string reason = null;
switch (opcode)
{
case ILOpcode.newobj:
reason = "newobj"; break;
case ILOpcode.call:
reason = "call"; break;
case ILOpcode.callvirt:
reason = "callvirt"; break;
case ILOpcode.ldftn:
reason = "ldftn"; break;
case ILOpcode.ldvirtftn:
reason = "ldvirtftn"; break;
default:
Debug.Assert(false); break;
}
// If we're scanning the fallback body because scanning the real body failed, don't trigger cctor.
// Accessing the cctor could have been a reason why we failed.
if (!_isFallbackBodyCompilation)
{
// Do we need to run the cctor?
TypeDesc owningType = runtimeDeterminedMethod.OwningType;
if (_factory.TypeSystemContext.HasLazyStaticConstructor(owningType))
{
// For beforefieldinit, we can wait for field access.
if (!((MetadataType)owningType).IsBeforeFieldInit)
{
// Accessing the static base will trigger the cctor.
if (owningType.IsRuntimeDeterminedSubtype)
{
_dependencies.Add(GetGenericLookupHelper(ReadyToRunHelperId.GetNonGCStaticBase, owningType), reason);
}
else
{
_dependencies.Add(_factory.ReadyToRunHelper(ReadyToRunHelperId.GetNonGCStaticBase, owningType), reason);
}
}
}
}
if (opcode == ILOpcode.newobj)
{
TypeDesc owningType = runtimeDeterminedMethod.OwningType;
if (owningType.IsString)
{
// String .ctor handled specially below
}
else
{
// Nullable needs to be unwrapped.
if (owningType.IsNullable)
{
owningType = owningType.Instantiation[0];
}
if (owningType.IsRuntimeDeterminedSubtype)
{
_dependencies.Add(GetGenericLookupHelper(ReadyToRunHelperId.TypeHandle, owningType), reason);
}
else
{
_dependencies.Add(_factory.ConstructedTypeSymbol(owningType), reason);
}
if (owningType.IsMdArray)
{
_dependencies.Add(GetHelperEntrypoint(ReadyToRunHelper.NewMultiDimArr_NonVarArg), reason);
return;
}
else
{
_dependencies.Add(GetHelperEntrypoint(ReadyToRunHelper.NewObject), reason);
}
}
if (owningType.IsDelegate)
{
// If this is a verifiable delegate construction sequence, the previous instruction is a ldftn/ldvirtftn
if (_previousInstructionOffset >= 0 && _ilBytes[_previousInstructionOffset] == (byte)ILOpcode.prefix1)
{
// TODO: for ldvirtftn we need to also check for the `dup` instruction, otherwise this is a normal newobj.
ILOpcode previousOpcode = (ILOpcode)(0x100 + _ilBytes[_previousInstructionOffset + 1]);
if (previousOpcode == ILOpcode.ldvirtftn || previousOpcode == ILOpcode.ldftn)
{
int delTargetToken = ReadILTokenAt(_previousInstructionOffset + 2);
var delTargetMethod = (MethodDesc)_methodIL.GetObject(delTargetToken);
TypeDesc canonDelegateType = method.OwningType.ConvertToCanonForm(CanonicalFormKind.Specific);
DelegateCreationInfo info = _compilation.GetDelegateCtor(canonDelegateType, delTargetMethod, previousOpcode == ILOpcode.ldvirtftn);
if (info.NeedsRuntimeLookup)
{
_dependencies.Add(GetGenericLookupHelper(ReadyToRunHelperId.DelegateCtor, info), reason);
}
else
{
_dependencies.Add(_factory.ReadyToRunHelper(ReadyToRunHelperId.DelegateCtor, info), reason);
}
return;
}
}
}
}
if (method.OwningType.IsDelegate && method.Name == "Invoke")
{
// TODO: might not want to do this if scanning for reflection.
// This is expanded as an intrinsic, not a function call.
return;
}
if (method.IsIntrinsic)
{
if (IsRuntimeHelpersInitializeArray(method))
{
if (_previousInstructionOffset >= 0 && _ilBytes[_previousInstructionOffset] == (byte)ILOpcode.ldtoken)
{
return;
}
}
if (IsRuntimeTypeHandleGetValueInternal(method))
{
if (_previousInstructionOffset >= 0 && _ilBytes[_previousInstructionOffset] == (byte)ILOpcode.ldtoken)
{
return;
}
}
}
TypeDesc exactType = method.OwningType;
bool resolvedConstraint = false;
bool forceUseRuntimeLookup = false;
MethodDesc methodAfterConstraintResolution = method;
if (_constrained != null)
{
// We have a "constrained." call. Try a partial resolve of the constraint call. Note that this
// will not necessarily resolve the call exactly, since we might be compiling
// shared generic code - it may just resolve it to a candidate suitable for
// JIT compilation, and require a runtime lookup for the actual code pointer
// to call.
MethodDesc directMethod = _constrained.GetClosestDefType().TryResolveConstraintMethodApprox(method.OwningType, method, out forceUseRuntimeLookup);
if (directMethod == null && _constrained.IsEnum)
{
// Constrained calls to methods on enum methods resolve to System.Enum's methods. System.Enum is a reference
// type though, so we would fail to resolve and box. We have a special path for those to avoid boxing.
directMethod = _compilation.TypeSystemContext.TryResolveConstrainedEnumMethod(_constrained, method);
}
if (directMethod != null)
{
// Either
// 1. no constraint resolution at compile time (!directMethod)
// OR 2. no code sharing lookup in call
// OR 3. we have have resolved to an instantiating stub
methodAfterConstraintResolution = directMethod;
Debug.Assert(!methodAfterConstraintResolution.OwningType.IsInterface);
resolvedConstraint = true;
exactType = _constrained;
}
else if (_constrained.IsValueType)
{
// We'll need to box `this`.
AddBoxingDependencies(_constrained, reason);
}
_constrained = null;
}
MethodDesc targetMethod = methodAfterConstraintResolution;
bool exactContextNeedsRuntimeLookup;
if (targetMethod.HasInstantiation)
{
exactContextNeedsRuntimeLookup = targetMethod.IsSharedByGenericInstantiations;
}
else
{
exactContextNeedsRuntimeLookup = exactType.IsCanonicalSubtype(CanonicalFormKind.Any);
}
//
// Determine whether to perform direct call
//
bool directCall = false;
if (targetMethod.Signature.IsStatic)
{
// Static methods are always direct calls
directCall = true;
}
else if (targetMethod.OwningType.IsInterface)
{
// Force all interface calls to be interpreted as if they are virtual.
directCall = false;
}
else if ((opcode != ILOpcode.callvirt && opcode != ILOpcode.ldvirtftn) || resolvedConstraint)
{
directCall = true;
}
else
{
if (!targetMethod.IsVirtual || targetMethod.IsFinal || targetMethod.OwningType.IsSealed())
{
directCall = true;
}
}
bool allowInstParam = opcode != ILOpcode.ldvirtftn && opcode != ILOpcode.ldftn;
if (directCall && !allowInstParam && targetMethod.GetCanonMethodTarget(CanonicalFormKind.Specific).RequiresInstArg())
{
// Needs a single address to call this method but the method needs a hidden argument.
// We need a fat function pointer for this that captures both things.
if (exactContextNeedsRuntimeLookup)
{
_dependencies.Add(GetGenericLookupHelper(ReadyToRunHelperId.MethodEntry, runtimeDeterminedMethod), reason);
}
else
{
_dependencies.Add(_factory.FatFunctionPointer(runtimeDeterminedMethod), reason);
}
}
else if (directCall)
{
bool referencingArrayAddressMethod = false;
if (targetMethod.IsIntrinsic)
{
// If this is an intrinsic method with a callsite-specific expansion, this will replace
// the method with a method the intrinsic expands into. If it's not the special intrinsic,
// method stays unchanged.
targetMethod = _compilation.ExpandIntrinsicForCallsite(targetMethod, _canonMethod);
// Array address method requires special dependency tracking.
referencingArrayAddressMethod = targetMethod.IsArrayAddressMethod();
}
MethodDesc concreteMethod = targetMethod;
targetMethod = targetMethod.GetCanonMethodTarget(CanonicalFormKind.Specific);
if (targetMethod.IsConstructor && targetMethod.OwningType.IsString)
{
_dependencies.Add(_factory.StringAllocator(targetMethod), reason);
}
else if (exactContextNeedsRuntimeLookup)
{
if (targetMethod.IsSharedByGenericInstantiations && !resolvedConstraint && !referencingArrayAddressMethod)
{
_dependencies.Add(_factory.RuntimeDeterminedMethod(runtimeDeterminedMethod), reason);
}
else
{
Debug.Assert(!forceUseRuntimeLookup);
_dependencies.Add(_factory.MethodEntrypoint(targetMethod), reason);
}
}
else
{
ISymbolNode instParam = null;
if (targetMethod.RequiresInstMethodDescArg())
{
instParam = _compilation.NodeFactory.MethodGenericDictionary(concreteMethod);
}
else if (targetMethod.RequiresInstMethodTableArg() || referencingArrayAddressMethod)
{
// Ask for a constructed type symbol because we need the vtable to get to the dictionary
instParam = _compilation.NodeFactory.ConstructedTypeSymbol(concreteMethod.OwningType);
}
if (instParam != null)
{
_dependencies.Add(instParam, reason);
if (!referencingArrayAddressMethod)
{
_dependencies.Add(_compilation.NodeFactory.ShadowConcreteMethod(concreteMethod), reason);
}
else
{
// We don't want array Address method to be modeled in the generic dependency analysis.
// The method doesn't actually have runtime determined dependencies (won't do
// any generic lookups).
_dependencies.Add(_compilation.NodeFactory.MethodEntrypoint(targetMethod), reason);
}
}
else if (targetMethod.AcquiresInstMethodTableFromThis())
{
_dependencies.Add(_compilation.NodeFactory.ShadowConcreteMethod(concreteMethod), reason);
}
else
{
_dependencies.Add(_compilation.NodeFactory.MethodEntrypoint(targetMethod), reason);
}
}
}
else if (method.HasInstantiation)
{
// Generic virtual method call
if (exactContextNeedsRuntimeLookup)
{
_dependencies.Add(GetGenericLookupHelper(ReadyToRunHelperId.MethodHandle, runtimeDeterminedMethod), reason);
}
else
{
_dependencies.Add(_factory.RuntimeMethodHandle(runtimeDeterminedMethod), reason);
}
_dependencies.Add(GetHelperEntrypoint(ReadyToRunHelper.GVMLookupForSlot), reason);
}
else
{
ReadyToRunHelperId helper;
if (opcode == ILOpcode.ldvirtftn)
{
helper = ReadyToRunHelperId.ResolveVirtualFunction;
}
else
{
Debug.Assert(opcode == ILOpcode.callvirt);
helper = ReadyToRunHelperId.VirtualCall;
}
if (exactContextNeedsRuntimeLookup && targetMethod.OwningType.IsInterface)
{
_dependencies.Add(GetGenericLookupHelper(helper, runtimeDeterminedMethod), reason);
}
else
{
// Get the slot defining method to make sure our virtual method use tracking gets this right.
// For normal C# code the targetMethod will always be newslot.
MethodDesc slotDefiningMethod = targetMethod.IsNewSlot ?
targetMethod : MetadataVirtualMethodAlgorithm.FindSlotDefiningMethodForVirtualMethod(targetMethod);
_dependencies.Add(_factory.ReadyToRunHelper(helper, slotDefiningMethod), reason);
}
}
}
protected override void EmitCode(NodeFactory factory, ref ARMEmitter encoder, bool relocsOnly)
{
switch (Id)
{
case ReadyToRunHelperId.NewHelper:
{
TypeDesc target = (TypeDesc)Target;
ARMDebug.EmitHelperNYIAssert(factory, ref encoder, ReadyToRunHelperId.NewHelper);
}
break;
case ReadyToRunHelperId.VirtualCall:
{
MethodDesc targetMethod = (MethodDesc)Target;
ARMDebug.EmitHelperNYIAssert(factory, ref encoder, ReadyToRunHelperId.VirtualCall);
}
break;
case ReadyToRunHelperId.IsInstanceOf:
{
TypeDesc target = (TypeDesc)Target;
ARMDebug.EmitHelperNYIAssert(factory, ref encoder, ReadyToRunHelperId.IsInstanceOf);
}
break;
case ReadyToRunHelperId.CastClass:
{
TypeDesc target = (TypeDesc)Target;
ARMDebug.EmitHelperNYIAssert(factory, ref encoder, ReadyToRunHelperId.CastClass);
}
break;
case ReadyToRunHelperId.NewArr1:
{
TypeDesc target = (TypeDesc)Target;
ARMDebug.EmitHelperNYIAssert(factory, ref encoder, ReadyToRunHelperId.NewArr1);
}
break;
case ReadyToRunHelperId.GetNonGCStaticBase:
{
MetadataType target = (MetadataType)Target;
ARMDebug.EmitHelperNYIAssert(factory, ref encoder, ReadyToRunHelperId.GetNonGCStaticBase);
}
break;
case ReadyToRunHelperId.GetThreadStaticBase:
{
MetadataType target = (MetadataType)Target;
ARMDebug.EmitHelperNYIAssert(factory, ref encoder, ReadyToRunHelperId.GetThreadStaticBase);
}
break;
case ReadyToRunHelperId.GetGCStaticBase:
{
MetadataType target = (MetadataType)Target;
ARMDebug.EmitHelperNYIAssert(factory, ref encoder, ReadyToRunHelperId.GetGCStaticBase);
}
break;
case ReadyToRunHelperId.DelegateCtor:
{
DelegateCreationInfo target = (DelegateCreationInfo)Target;
ARMDebug.EmitHelperNYIAssert(factory, ref encoder, ReadyToRunHelperId.DelegateCtor);
}
break;
case ReadyToRunHelperId.ResolveVirtualFunction:
{
MethodDesc targetMethod = (MethodDesc)Target;
ARMDebug.EmitHelperNYIAssert(factory, ref encoder, ReadyToRunHelperId.ResolveVirtualFunction);
}
break;
default:
throw new NotImplementedException();
}
}
