protected sealed override void EmitCode(NodeFactory factory, ref X64Emitter encoder, bool relocsOnly)
{
// First load the generic context into the context register.
EmitLoadGenericContext(factory, ref encoder, relocsOnly);
Register contextRegister = GetContextRegister(ref encoder);
switch (_id)
{
case ReadyToRunHelperId.GetNonGCStaticBase:
{
Debug.Assert(contextRegister == encoder.TargetRegister.Arg0);
MetadataType target = (MetadataType)_target;
if (!factory.TypeSystemContext.HasLazyStaticConstructor(target))
{
EmitDictionaryLookup(factory, ref encoder, encoder.TargetRegister.Arg0, encoder.TargetRegister.Result, _lookupSignature, relocsOnly);
encoder.EmitRET();
}
else
{
EmitDictionaryLookup(factory, ref encoder, encoder.TargetRegister.Arg0, encoder.TargetRegister.Arg0, _lookupSignature, relocsOnly);
encoder.EmitMOV(encoder.TargetRegister.Result, encoder.TargetRegister.Arg0);
// We need to trigger the cctor before returning the base. It is stored at the beginning of the non-GC statics region.
int cctorContextSize = NonGCStaticsNode.GetClassConstructorContextStorageSize(factory.Target, target);
AddrMode initialized = new AddrMode(encoder.TargetRegister.Arg0, null, factory.Target.PointerSize - cctorContextSize, 0, AddrModeSize.Int32);
encoder.EmitCMP(ref initialized, 1);
encoder.EmitRETIfEqual();
AddrMode loadCctor = new AddrMode(encoder.TargetRegister.Arg0, null, -cctorContextSize, 0, AddrModeSize.Int64);
encoder.EmitLEA(encoder.TargetRegister.Arg0, ref loadCctor);
encoder.EmitMOV(encoder.TargetRegister.Arg1, encoder.TargetRegister.Result);
encoder.EmitJMP(factory.HelperEntrypoint(HelperEntrypoint.EnsureClassConstructorRunAndReturnNonGCStaticBase));
}
}
break;
case ReadyToRunHelperId.GetGCStaticBase:
{
Debug.Assert(contextRegister == encoder.TargetRegister.Arg0);
MetadataType target = (MetadataType)_target;
EmitDictionaryLookup(factory, ref encoder, encoder.TargetRegister.Arg0, encoder.TargetRegister.Result, _lookupSignature, relocsOnly);
AddrMode loadFromResult = new AddrMode(encoder.TargetRegister.Result, null, 0, 0, AddrModeSize.Int64);
encoder.EmitMOV(encoder.TargetRegister.Result, ref loadFromResult);
encoder.EmitMOV(encoder.TargetRegister.Result, ref loadFromResult);
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.
GenericLookupResult nonGcRegionLookup = factory.GenericLookup.TypeNonGCStaticBase(target);
EmitDictionaryLookup(factory, ref encoder, encoder.TargetRegister.Arg0, encoder.TargetRegister.Arg0, nonGcRegionLookup, relocsOnly);
int cctorContextSize = NonGCStaticsNode.GetClassConstructorContextStorageSize(factory.Target, target);
AddrMode initialized = new AddrMode(encoder.TargetRegister.Arg0, null, factory.Target.PointerSize - cctorContextSize, 0, AddrModeSize.Int32);
encoder.EmitCMP(ref initialized, 1);
encoder.EmitRETIfEqual();
encoder.EmitMOV(encoder.TargetRegister.Arg1, encoder.TargetRegister.Result);
AddrMode loadCctor = new AddrMode(encoder.TargetRegister.Arg0, null, -cctorContextSize, 0, AddrModeSize.Int64);
encoder.EmitLEA(encoder.TargetRegister.Arg0, ref loadCctor);
encoder.EmitJMP(factory.HelperEntrypoint(HelperEntrypoint.EnsureClassConstructorRunAndReturnGCStaticBase));
}
}
break;
case ReadyToRunHelperId.GetThreadStaticBase:
{
Debug.Assert(contextRegister == encoder.TargetRegister.Arg0);
MetadataType target = (MetadataType)_target;
// Look up the index cell
EmitDictionaryLookup(factory, ref encoder, encoder.TargetRegister.Arg0, encoder.TargetRegister.Arg1, _lookupSignature, relocsOnly);
ISymbolNode helperEntrypoint;
if (factory.TypeSystemContext.HasLazyStaticConstructor(target))
{
// There is a lazy class constructor. We need the non-GC static base because that's where the
// class constructor context lives.
GenericLookupResult nonGcRegionLookup = factory.GenericLookup.TypeNonGCStaticBase(target);
EmitDictionaryLookup(factory, ref encoder, encoder.TargetRegister.Arg0, encoder.TargetRegister.Arg2, nonGcRegionLookup, relocsOnly);
int cctorContextSize = NonGCStaticsNode.GetClassConstructorContextStorageSize(factory.Target, target);
AddrMode loadCctor = new AddrMode(encoder.TargetRegister.Arg2, null, -cctorContextSize, 0, AddrModeSize.Int64);
encoder.EmitLEA(encoder.TargetRegister.Arg2, ref loadCctor);
helperEntrypoint = factory.HelperEntrypoint(HelperEntrypoint.EnsureClassConstructorRunAndReturnThreadStaticBase);
}
else
{
helperEntrypoint = factory.HelperEntrypoint(HelperEntrypoint.GetThreadStaticBaseForType);
}
// 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 loadFromArg1 = new AddrMode(encoder.TargetRegister.Arg1, null, 0, 0, AddrModeSize.Int64);
encoder.EmitMOV(encoder.TargetRegister.Arg0, ref loadFromArg1);
// Second arg: index of the type in the ThreadStatic section of the modules
AddrMode loadFromArg1AndDelta = new AddrMode(encoder.TargetRegister.Arg1, null, factory.Target.PointerSize, 0, AddrModeSize.Int64);
encoder.EmitMOV(encoder.TargetRegister.Arg1, ref loadFromArg1AndDelta);
encoder.EmitJMP(helperEntrypoint);
}
break;
case ReadyToRunHelperId.DelegateCtor:
{
// This is a weird helper. Codegen populated Arg0 and Arg1 with the values that the constructor
// method expects. Codegen also passed us the generic context in Arg2.
// We now need to load the delegate target method into Arg2 (using a dictionary lookup)
// and the optional 4th parameter, and call the ctor.
Debug.Assert(contextRegister == encoder.TargetRegister.Arg2);
var target = (DelegateCreationInfo)_target;
EmitDictionaryLookup(factory, ref encoder, encoder.TargetRegister.Arg2, encoder.TargetRegister.Arg2, _lookupSignature, relocsOnly);
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;
// 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:
case ReadyToRunHelperId.TypeHandleForCasting:
{
EmitDictionaryLookup(factory, ref encoder, contextRegister, encoder.TargetRegister.Result, _lookupSignature, relocsOnly);
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:
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, (MethodDesc)Target);
Debug.Assert(slot != -1);
AddrMode jmpAddrMode = new AddrMode(encoder.TargetRegister.Result, null, EETypeNode.GetVTableOffset(factory.Target.PointerSize) + (slot * factory.Target.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.NecessaryTypeSymbol(target));
encoder.EmitJMP(factory.ExternSymbol(JitHelper.GetNewArrayHelperForType(target)));
}
break;
case ReadyToRunHelperId.GetNonGCStaticBase:
{
MetadataType target = (MetadataType)Target;
encoder.EmitLEAQ(encoder.TargetRegister.Result, factory.TypeNonGCStaticsSymbol(target));
if (!factory.TypeInitializationManager.HasLazyStaticConstructor(target))
{
encoder.EmitRET();
}
else
{
// We need to trigger the cctor before returning the base
encoder.EmitLEAQ(encoder.TargetRegister.Arg0, factory.TypeCctorContextSymbol(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.TypeInitializationManager.HasLazyStaticConstructor(target))
{
encoder.EmitRET();
}
else
{
// We need to trigger the cctor before returning the base
encoder.EmitLEAQ(encoder.TargetRegister.Arg0, factory.TypeCctorContextSymbol(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:
{
DelegateInfo target = (DelegateInfo)Target;
encoder.EmitLEAQ(encoder.TargetRegister.Arg2, factory.MethodEntrypoint(target.Target));
if (target.ShuffleThunk != null)
{
encoder.EmitLEAQ(encoder.TargetRegister.Arg3, factory.MethodEntrypoint(target.ShuffleThunk));
}
encoder.EmitJMP(factory.MethodEntrypoint(target.Ctor));
}
break;
case ReadyToRunHelperId.InterfaceDispatch:
{
encoder.EmitLEAQ(Register.R10, factory.InterfaceDispatchCell((MethodDesc)Target));
AddrMode jmpAddrMode = new AddrMode(Register.R10, null, 0, 0, AddrModeSize.Int64);
encoder.EmitJmpToAddrMode(ref jmpAddrMode);
}
break;
default:
throw new NotImplementedException();
}
}
protected virtual void EmitLoadGenericContext(NodeFactory factory, ref X64Emitter encoder, bool relocsOnly)
{
// Assume generic context is already loaded in the context register.
}
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;
default:
throw new NotImplementedException();
}
}
protected override void EmitCode(NodeFactory factory, ref X64Emitter instructionEncoder, bool relocsOnly)
{
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:
{
MetadataType target = (MetadataType)Target;
ThreadStaticsNode targetNode = factory.TypeThreadStaticsSymbol(target) as ThreadStaticsNode;
int typeTlsIndex = 0;
// The GetThreadStaticBase helper should be generated only in the compilation module group
// that contains the thread static field because the helper needs the index of the type
// in Thread Static section of the containing module.
// TODO: This needs to be fixed this for the multi-module compilation
Debug.Assert(targetNode != null);
if (!relocsOnly)
{
// Get index of the targetNode in the Thread Static region
typeTlsIndex = factory.ThreadStaticsRegion.IndexOfEmbeddedObject(targetNode);
}
// 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.EmitLEAQ(encoder.TargetRegister.Arg0, factory.TypeManagerIndirection);
// Second arg: index of the type in the ThreadStatic section of the modules
encoder.EmitMOV(encoder.TargetRegister.Arg1, typeTlsIndex);
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;
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:
encoder.EmitLEAQ(encoder.TargetRegister.Arg0, factory.ConstructedTypeSymbol((TypeDesc)Target));
encoder.EmitJMP(factory.ExternSymbol("__allocate_object"));
break;
case ReadyToRunHelperId.VirtualCall:
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, (MethodDesc)Target);
Debug.Assert(slot != -1);
AddrMode jmpAddrMode = new AddrMode(encoder.TargetRegister.Result, null, EETypeNode.GetVTableOffset(factory.Target.PointerSize) + (slot * factory.Target.PointerSize), 0, AddrModeSize.Int64);
encoder.EmitJmpToAddrMode(ref jmpAddrMode);
}
break;
case ReadyToRunHelperId.IsInstanceOf:
encoder.EmitLEAQ(encoder.TargetRegister.Arg1, factory.NecessaryTypeSymbol((TypeDesc)Target));
encoder.EmitJMP(factory.ExternSymbol("__isinst_class"));
break;
case ReadyToRunHelperId.CastClass:
encoder.EmitLEAQ(encoder.TargetRegister.Arg1, factory.NecessaryTypeSymbol((TypeDesc)Target));
encoder.EmitJMP(factory.ExternSymbol("__castclass_class"));
break;
case ReadyToRunHelperId.NewArr1:
encoder.EmitLEAQ(encoder.TargetRegister.Arg1, factory.NecessaryTypeSymbol((TypeDesc)Target));
encoder.EmitJMP(factory.ExternSymbol("__allocate_array"));
break;
case ReadyToRunHelperId.GetNonGCStaticBase:
if (!((MetadataType)Target).HasStaticConstructor)
{
Debug.Assert(Id == ReadyToRunHelperId.GetNonGCStaticBase);
encoder.EmitLEAQ(encoder.TargetRegister.Result, factory.TypeNonGCStaticsSymbol((MetadataType)Target));
encoder.EmitRET();
}
else
{
// We need to trigger the cctor before returning the base
encoder.EmitLEAQ(encoder.TargetRegister.Arg0, factory.TypeCctorContextSymbol((MetadataType)Target));
encoder.EmitLEAQ(encoder.TargetRegister.Arg1, factory.TypeNonGCStaticsSymbol((MetadataType)Target));
encoder.EmitJMP(factory.HelperEntrypoint(HelperEntrypoint.EnsureClassConstructorRunAndReturnNonGCStaticBase));
}
break;
case ReadyToRunHelperId.GetThreadStaticBase:
encoder.EmitINT3();
break;
case ReadyToRunHelperId.GetGCStaticBase:
if (!((MetadataType)Target).HasStaticConstructor)
{
encoder.EmitLEAQ(encoder.TargetRegister.Result, factory.TypeGCStaticsSymbol((MetadataType)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);
encoder.EmitRET();
}
else
{
// We need to trigger the cctor before returning the base
encoder.EmitLEAQ(encoder.TargetRegister.Arg0, factory.TypeCctorContextSymbol((MetadataType)Target));
encoder.EmitLEAQ(encoder.TargetRegister.Arg1, factory.TypeGCStaticsSymbol((MetadataType)Target));
AddrMode loadFromRdx = new AddrMode(encoder.TargetRegister.Arg1, null, 0, 0, AddrModeSize.Int64);
encoder.EmitMOV(encoder.TargetRegister.Arg1, ref loadFromRdx);
encoder.EmitMOV(encoder.TargetRegister.Arg1, ref loadFromRdx);
encoder.EmitJMP(factory.HelperEntrypoint(HelperEntrypoint.EnsureClassConstructorRunAndReturnGCStaticBase));
}
break;
case ReadyToRunHelperId.DelegateCtor:
{
DelegateInfo target = (DelegateInfo)Target;
encoder.EmitLEAQ(encoder.TargetRegister.Arg2, factory.MethodEntrypoint(target.Target));
if (target.ShuffleThunk != null)
{
encoder.EmitLEAQ(encoder.TargetRegister.Arg3, factory.MethodEntrypoint(target.ShuffleThunk));
}
encoder.EmitJMP(factory.MethodEntrypoint(target.Ctor));
}
break;
default:
throw new NotImplementedException();
}
}
