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();
}
}
protected sealed override void EmitCode(NodeFactory factory, ref ARMEmitter 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);
EmitDictionaryLookup(factory, ref encoder, encoder.TargetRegister.Arg0, encoder.TargetRegister.Result, _lookupSignature, relocsOnly);
MetadataType target = (MetadataType)_target;
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.
int cctorContextSize = NonGCStaticsNode.GetClassConstructorContextSize(factory.Target);
encoder.EmitLDR(encoder.TargetRegister.Arg1, encoder.TargetRegister.Arg0, ((short)(factory.Target.PointerSize - cctorContextSize)));
encoder.EmitCMP(encoder.TargetRegister.Arg1, ((byte)1));
encoder.EmitRETIfEqual();
encoder.EmitMOV(encoder.TargetRegister.Arg1, encoder.TargetRegister.Result);
encoder.EmitSUB(encoder.TargetRegister.Arg0, ((byte)(cctorContextSize)));
encoder.EmitJMP(factory.HelperEntrypoint(HelperEntrypoint.EnsureClassConstructorRunAndReturnNonGCStaticBase));
}
}
break;
case ReadyToRunHelperId.GetGCStaticBase:
{
Debug.Assert(contextRegister == encoder.TargetRegister.Arg0);
encoder.EmitMOV(encoder.TargetRegister.Arg1, encoder.TargetRegister.Arg0);
EmitDictionaryLookup(factory, ref encoder, encoder.TargetRegister.Arg0, encoder.TargetRegister.Result, _lookupSignature, relocsOnly);
encoder.EmitLDR(encoder.TargetRegister.Result, encoder.TargetRegister.Result);
MetadataType target = (MetadataType)_target;
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.
GenericLookupResult nonGcRegionLookup = factory.GenericLookup.TypeNonGCStaticBase(target);
EmitDictionaryLookup(factory, ref encoder, encoder.TargetRegister.Arg1, encoder.TargetRegister.Arg2, nonGcRegionLookup, relocsOnly);
int cctorContextSize = NonGCStaticsNode.GetClassConstructorContextSize(factory.Target);
encoder.EmitLDR(encoder.TargetRegister.Arg3, encoder.TargetRegister.Arg2, ((short)(factory.Target.PointerSize - cctorContextSize)));
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.EmitSUB(encoder.TargetRegister.Arg0, cctorContextSize);
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.PreinitializationManager.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.GetClassConstructorContextSize(factory.Target);
encoder.EmitSUB(encoder.TargetRegister.Arg2, cctorContextSize);
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).
encoder.EmitLDR(encoder.TargetRegister.Arg0, encoder.TargetRegister.Arg1);
// Second arg: index of the type in the ThreadStatic section of the modules
encoder.EmitLDR(encoder.TargetRegister.Arg1, encoder.TargetRegister.Arg1, factory.Target.PointerSize);
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.EmitMOV(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.ObjectAllocator:
case ReadyToRunHelperId.TypeHandleForCasting:
case ReadyToRunHelperId.ConstrainedDirectCall:
{
EmitDictionaryLookup(factory, ref encoder, contextRegister, encoder.TargetRegister.Result, _lookupSignature, relocsOnly);
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:
{
ARMDebug.EmitHelperNYIAssert(factory, ref encoder, ReadyToRunHelperId.VirtualCall);
/*
***
***NOT TESTED!!!
***
***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:
{
ARMDebug.EmitHelperNYIAssert(factory, ref encoder, ReadyToRunHelperId.GetThreadStaticBase);
/*
***
***NOT TESTED!!!
***
***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));
***}
*/
}