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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using System.Diagnostics;
using Internal.Text;
using Internal.TypeSystem;
using Internal.TypeSystem.Interop;
namespace ILCompiler.DependencyAnalysis
{
public class MethodCodeNode : ObjectNode, IMethodBodyNode, INodeWithCodeInfo, INodeWithDebugInfo, IMethodCodeNode, ISpecialUnboxThunkNode
{
public static readonly ObjectNodeSection StartSection = new ObjectNodeSection(".managedcode$A", SectionType.Executable);
public static readonly ObjectNodeSection WindowsContentSection = new ObjectNodeSection(".managedcode$I", SectionType.Executable);
public static readonly ObjectNodeSection UnixContentSection = new ObjectNodeSection("__managedcode", SectionType.Executable);
public static readonly ObjectNodeSection EndSection = new ObjectNodeSection(".managedcode$Z", SectionType.Executable);
private MethodDesc _method;
private ObjectData _methodCode;
private FrameInfo[] _frameInfos;
private byte[] _gcInfo;
private ObjectData _ehInfo;
private DebugLocInfo[] _debugLocInfos;
private DebugVarInfo[] _debugVarInfos;
private DebugEHClauseInfo[] _debugEHClauseInfos;
public MethodCodeNode(MethodDesc method)
{
Debug.Assert(!method.IsAbstract);
Debug.Assert(method.GetCanonMethodTarget(CanonicalFormKind.Specific) == method);
_method = method;
}
public void SetCode(ObjectData data)
{
Debug.Assert(_methodCode == null);
_methodCode = data;
}
public MethodDesc Method => _method;
protected override string GetName(NodeFactory factory) => this.GetMangledName(factory.NameMangler);
public override ObjectNodeSection Section
{
get
{
return _method.Context.Target.IsWindows ? WindowsContentSection : UnixContentSection;
}
}
public override bool StaticDependenciesAreComputed => _methodCode != null;
public virtual void AppendMangledName(NameMangler nameMangler, Utf8StringBuilder sb)
{
sb.Append(nameMangler.GetMangledMethodName(_method));
}
public int Offset => 0;
public override bool IsShareable => _method is InstantiatedMethod || EETypeNode.IsTypeNodeShareable(_method.OwningType);
protected override DependencyList ComputeNonRelocationBasedDependencies(NodeFactory factory)
{
DependencyList dependencies = null;
TypeDesc owningType = _method.OwningType;
if (factory.TypeSystemContext.HasEagerStaticConstructor(owningType))
{
if (dependencies == null)
dependencies = new DependencyList();
dependencies.Add(factory.EagerCctorIndirection(owningType.GetStaticConstructor()), "Eager .cctor");
}
if (_ehInfo != null && _ehInfo.Relocs != null)
{
if (dependencies == null)
dependencies = new DependencyList();
foreach (Relocation reloc in _ehInfo.Relocs)
{
dependencies.Add(reloc.Target, "reloc");
}
}
if (MethodAssociatedDataNode.MethodHasAssociatedData(factory, this))
{
dependencies = dependencies ?? new DependencyList();
dependencies.Add(new DependencyListEntry(factory.MethodAssociatedData(this), "Method associated data"));
}
CodeBasedDependencyAlgorithm.AddDependenciesDueToMethodCodePresence(ref dependencies, factory, _method);
return dependencies;
}
public override ObjectData GetData(NodeFactory factory, bool relocsOnly)
{
return _methodCode;
}
public bool IsSpecialUnboxingThunk => ((CompilerTypeSystemContext)Method.Context).IsSpecialUnboxingThunk(_method);
public ISymbolNode GetUnboxingThunkTarget(NodeFactory factory)
{
Debug.Assert(IsSpecialUnboxingThunk);
MethodDesc nonUnboxingMethod = ((CompilerTypeSystemContext)Method.Context).GetTargetOfSpecialUnboxingThunk(_method);
return factory.MethodEntrypoint(nonUnboxingMethod, false);
}
public FrameInfo[] FrameInfos => _frameInfos;
public byte[] GCInfo => _gcInfo;
public ObjectData EHInfo => _ehInfo;
public ISymbolNode GetAssociatedDataNode(NodeFactory factory)
{
if (MethodAssociatedDataNode.MethodHasAssociatedData(factory, this))
return factory.MethodAssociatedData(this);
return null;
}
public void InitializeFrameInfos(FrameInfo[] frameInfos)
{
Debug.Assert(_frameInfos == null);
_frameInfos = frameInfos;
}
public void InitializeGCInfo(byte[] gcInfo)
{
Debug.Assert(_gcInfo == null);
_gcInfo = gcInfo;
}
public void InitializeEHInfo(ObjectData ehInfo)
{
Debug.Assert(_ehInfo == null);
_ehInfo = ehInfo;
}
public DebugLocInfo[] DebugLocInfos => _debugLocInfos;
public DebugVarInfo[] DebugVarInfos => _debugVarInfos;
public DebugEHClauseInfo[] DebugEHClauseInfos => _debugEHClauseInfos;
public void InitializeDebugLocInfos(DebugLocInfo[] debugLocInfos)
{
Debug.Assert(_debugLocInfos == null);
_debugLocInfos = debugLocInfos;
}
public void InitializeDebugVarInfos(DebugVarInfo[] debugVarInfos)
{
Debug.Assert(_debugVarInfos == null);
_debugVarInfos = debugVarInfos;
}
public void InitializeDebugEHClauseInfos(DebugEHClauseInfo[] debugEHClauseInfos)
{
Debug.Assert(_debugEHClauseInfos == null);
_debugEHClauseInfos = debugEHClauseInfos;
}
public override int ClassCode => 788492407;
public override int CompareToImpl(ISortableNode other, CompilerComparer comparer)
{
return comparer.Compare(_method, ((MethodCodeNode)other)._method);
}
}
}
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