1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
|
// 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;
using System.Collections.Generic;
using Internal.Text;
using Internal.NativeFormat;
using Internal.TypeSystem;
namespace ILCompiler.DependencyAnalysis
{
/// <summary>
/// Native layout info blob.
/// </summary>
internal sealed class NativeLayoutInfoNode : ObjectNode, ISymbolDefinitionNode
{
private ObjectAndOffsetSymbolNode _endSymbol;
private ExternalReferencesTableNode _externalReferences;
private ExternalReferencesTableNode _staticsReferences;
private NativeWriter _writer;
private byte[] _writerSavedBytes;
private Section _signaturesSection;
private Section _ldTokenInfoSection;
private Section _templatesSection;
private List<NativeLayoutVertexNode> _vertexNodesToWrite;
public NativeLayoutInfoNode(ExternalReferencesTableNode externalReferences, ExternalReferencesTableNode staticsReferences)
{
_endSymbol = new ObjectAndOffsetSymbolNode(this, 0, "__nativelayoutinfo_End", true);
_externalReferences = externalReferences;
_staticsReferences = staticsReferences;
_writer = new NativeWriter();
_signaturesSection = _writer.NewSection();
_ldTokenInfoSection = _writer.NewSection();
_templatesSection = _writer.NewSection();
_vertexNodesToWrite = new List<NativeLayoutVertexNode>();
}
public void AppendMangledName(NameMangler nameMangler, Utf8StringBuilder sb)
{
sb.Append(nameMangler.CompilationUnitPrefix).Append("__nativelayoutinfo");
}
public ISymbolNode EndSymbol => _endSymbol;
public int Offset => 0;
public override bool IsShareable => false;
public override ObjectNodeSection Section => _externalReferences.Section;
public override bool StaticDependenciesAreComputed => true;
protected override string GetName(NodeFactory factory) => this.GetMangledName(factory.NameMangler);
public Section LdTokenInfoSection => _ldTokenInfoSection;
public Section SignaturesSection => _signaturesSection;
public Section TemplatesSection => _templatesSection;
public ExternalReferencesTableNode ExternalReferences => _externalReferences;
public ExternalReferencesTableNode StaticsReferences => _staticsReferences;
public NativeWriter Writer => _writer;
public void AddVertexNodeToNativeLayout(NativeLayoutVertexNode vertexNode)
{
_vertexNodesToWrite.Add(vertexNode);
}
public void SaveNativeLayoutInfoWriter(NodeFactory factory)
{
if (_writerSavedBytes != null)
return;
foreach (var vertexNode in _vertexNodesToWrite)
vertexNode.WriteVertex(factory);
_writerSavedBytes = _writer.Save();
// Zero out the native writer and vertex list so that we AV if someone tries to insert after we're done.
_writer = null;
_vertexNodesToWrite = null;
}
public override ObjectData GetData(NodeFactory factory, bool relocsOnly = false)
{
// Dependencies of the NativeLayoutInfo node are tracked by the callers that emit data into the native layout writer
if (relocsOnly)
return new ObjectData(Array.Empty<byte>(), Array.Empty<Relocation>(), 1, new ISymbolDefinitionNode[] { this });
SaveNativeLayoutInfoWriter(factory);
_endSymbol.SetSymbolOffset(_writerSavedBytes.Length);
return new ObjectData(_writerSavedBytes, Array.Empty<Relocation>(), 1, new ISymbolDefinitionNode[] { this, _endSymbol });
}
protected internal override int Phase => (int)ObjectNodePhase.Ordered;
protected internal override int ClassCode => (int)ObjectNodeOrder.NativeLayoutInfoNode;
}
}
|
