protected override string GetName(NodeFactory factory)
{
Utf8StringBuilder sb = new Utf8StringBuilder();
AppendMangledName(factory.NameMangler, sb);
return(sb.ToString());
}
protected override void DumpObjectNode(NameMangler mangler, ObjectNode node, ObjectData objectData)
{
string name = null;
_writer.WriteStartElement(GetObjectNodeName(node));
var symbolNode = node as ISymbolNode;
if (symbolNode != null)
{
Utf8StringBuilder sb = new Utf8StringBuilder();
symbolNode.AppendMangledName(mangler, sb);
name = sb.ToString();
_writer.WriteAttributeString("Name", name);
}
_writer.WriteAttributeString("Length", objectData.Data.Length.ToStringInvariant());
_writer.WriteAttributeString("Hash", HashData(objectData.Data));
_writer.WriteEndElement();
var nodeWithCodeInfo = node as INodeWithCodeInfo;
if (nodeWithCodeInfo != null)
{
_writer.WriteStartElement("GCInfo");
_writer.WriteAttributeString("Name", name);
_writer.WriteAttributeString("Length", nodeWithCodeInfo.GCInfo.Length.ToStringInvariant());
_writer.WriteAttributeString("Hash", HashData(nodeWithCodeInfo.GCInfo));
_writer.WriteEndElement();
}
}
protected override string GetName(NodeFactory context)
{
Utf8StringBuilder sb = new Utf8StringBuilder();
sb.Append("ProfileDataNode->");
_methodNode.AppendMangledName(context.NameMangler, sb);
return(sb.ToString());
}
public void TestUtfStringBuilder2()
{
string source = "abcd012345\n\r\u0000\u00a4\u10fb\ufffdnjetty";
Utf8StringBuilder buffer = new Utf8StringBuilder();
buffer.Append(source);
for (int i = 0; i < 100; i++)
{
source += "abcd012345\n\r\u0000\u00a4\u10fb\ufffdnjetty";
buffer.Append("abcd012345\n\r\u0000\u00a4\u10fb\ufffdnjetty");
}
Assert.AreEqual(source, buffer.ToString());
Assert.IsTrue(buffer.ToString().EndsWith("njetty"));
}
/// <summary>
/// Add an ObjectData block to a given section.
/// </summary>
/// <param name="data">Block to add</param>
/// <param name="sectionIndex">Section index</param>
/// <param name="name">Node name to emit in the map file</param>
/// <param name="mapFile">Optional map file to emit</param>
public void AddObjectData(ObjectNode.ObjectData objectData, int sectionIndex, string name, TextWriter mapFile)
{
Section section = _sections[sectionIndex];
// Calculate alignment padding - apparently ObjectDataBuilder can produce an alignment of 0
int alignedOffset = section.Content.Count;
if (objectData.Alignment > 1)
{
alignedOffset = (section.Content.Count + objectData.Alignment - 1) & -objectData.Alignment;
int padding = alignedOffset - section.Content.Count;
if (padding > 0)
{
byte paddingByte = 0;
if ((section.Characteristics & SectionCharacteristics.ContainsCode) != 0)
{
// TODO: only use INT3 on x86 & amd64
paddingByte = 0xCC;
}
section.Content.WriteBytes(paddingByte, padding);
}
}
if (mapFile != null)
{
mapFile.WriteLine($@"S{sectionIndex}+0x{alignedOffset:X4}..{(alignedOffset + objectData.Data.Length):X4}: {objectData.Data.Length:X4} * {name}");
}
section.Content.WriteBytes(objectData.Data);
if (objectData.DefinedSymbols != null)
{
foreach (ISymbolDefinitionNode symbol in objectData.DefinedSymbols)
{
if (mapFile != null)
{
Utf8StringBuilder sb = new Utf8StringBuilder();
symbol.AppendMangledName(GetNameMangler(), sb);
int sectionRelativeOffset = alignedOffset + symbol.Offset;
mapFile.WriteLine($@" +0x{sectionRelativeOffset:X4}: {sb.ToString()}");
}
_symbolMap.Add(symbol, new SymbolTarget(
sectionIndex: sectionIndex,
offset: alignedOffset + symbol.Offset));
}
}
if (objectData.Relocs != null && objectData.Relocs.Length != 0)
{
section.Relocations.Add(new ObjectDataRelocations(alignedOffset, objectData.Relocs));
}
}
public void TestUtfStringBuilder1()
{
string source = "abcd012345\n\r\u0000\u00a4\u10fb\ufffdnjetty";
for (int i = 0; i < 100; i++)
{
source += "abcd012345\n\r\u0000\u00a4\u10fb\ufffdnjetty";
}
byte[] bytes = System.Text.Encoding.UTF8.GetBytes(source);
Utf8StringBuilder buffer = new Utf8StringBuilder();
for (int i = 0; i < bytes.Length; i++)
{
buffer.Append(bytes[i]);
}
Assert.AreEqual(source, buffer.ToString());
Assert.IsTrue(buffer.ToString().EndsWith("njetty"));
}
/// <summary>
/// Add an ObjectData block to a given section.
/// </summary>
/// <param name="data">Block to add</param>
/// <param name="sectionIndex">Section index</param>
/// <param name="name">Node name to emit in the map file</param>
/// <param name="mapFileBuilder">Optional map file to emit</param>
public void AddObjectData(ObjectNode.ObjectData objectData, int sectionIndex, string name, MapFileBuilder mapFileBuilder)
{
Section section = _sections[sectionIndex];
// Calculate alignment padding - apparently ObjectDataBuilder can produce an alignment of 0
int alignedOffset = section.Content.Count;
if (objectData.Alignment > 1)
{
alignedOffset = (section.Content.Count + objectData.Alignment - 1) & -objectData.Alignment;
int padding = alignedOffset - section.Content.Count;
if (padding > 0)
{
if ((section.Characteristics & SectionCharacteristics.ContainsCode) != 0)
{
uint cp = _codePadding;
while (padding >= sizeof(uint))
{
section.Content.WriteUInt32(cp);
padding -= sizeof(uint);
}
if (padding >= 2)
{
section.Content.WriteUInt16(unchecked ((ushort)cp));
cp >>= 16;
}
if ((padding & 1) != 0)
{
section.Content.WriteByte(unchecked ((byte)cp));
}
}
else
{
section.Content.WriteBytes(0, padding);
}
}
}
if (mapFileBuilder != null)
{
MapFileNode node = new MapFileNode(sectionIndex, alignedOffset, objectData.Data.Length, name);
mapFileBuilder.AddNode(node);
if (objectData.Relocs != null)
{
foreach (Relocation reloc in objectData.Relocs)
{
RelocType fileReloc = Relocation.GetFileRelocationType(reloc.RelocType);
if (fileReloc != RelocType.IMAGE_REL_BASED_ABSOLUTE)
{
mapFileBuilder.AddRelocation(node, fileReloc);
}
}
}
}
section.Content.WriteBytes(objectData.Data);
if (objectData.DefinedSymbols != null)
{
foreach (ISymbolDefinitionNode symbol in objectData.DefinedSymbols)
{
if (mapFileBuilder != null)
{
Utf8StringBuilder sb = new Utf8StringBuilder();
symbol.AppendMangledName(GetNameMangler(), sb);
int sectionRelativeOffset = alignedOffset + symbol.Offset;
mapFileBuilder.AddSymbol(new MapFileSymbol(sectionIndex, sectionRelativeOffset, sb.ToString()));
}
_symbolMap.Add(symbol, new SymbolTarget(
sectionIndex: sectionIndex,
offset: alignedOffset + symbol.Offset,
size: objectData.Data.Length));
}
}
if (objectData.Relocs != null && objectData.Relocs.Length != 0)
{
section.PlacedObjectDataToRelocate.Add(new PlacedObjectData(alignedOffset, objectData));
}
}
/// <summary>
/// Add an ObjectData block to a given section.
/// </summary>
/// <param name="data">Block to add</param>
/// <param name="sectionIndex">Section index</param>
/// <param name="name">Node name to emit in the map file</param>
/// <param name="mapFile">Optional map file to emit</param>
public void AddObjectData(ObjectNode.ObjectData objectData, int sectionIndex, string name, TextWriter mapFile)
{
Section section = _sections[sectionIndex];
// Calculate alignment padding - apparently ObjectDataBuilder can produce an alignment of 0
int alignedOffset = section.Content.Count;
if (objectData.Alignment > 1)
{
alignedOffset = (section.Content.Count + objectData.Alignment - 1) & -objectData.Alignment;
int padding = alignedOffset - section.Content.Count;
if (padding > 0)
{
if ((section.Characteristics & SectionCharacteristics.ContainsCode) != 0)
{
uint cp = _codePadding;
while (padding >= sizeof(uint))
{
section.Content.WriteUInt32(cp);
padding -= sizeof(uint);
}
if (padding >= 2)
{
section.Content.WriteUInt16(unchecked ((ushort)cp));
cp >>= 16;
}
if ((padding & 1) != 0)
{
section.Content.WriteByte(unchecked ((byte)cp));
}
}
else
{
section.Content.WriteBytes(0, padding);
}
}
}
if (mapFile != null)
{
mapFile.WriteLine($@"S{sectionIndex}+0x{alignedOffset:X4}..{(alignedOffset + objectData.Data.Length):X4}: {objectData.Data.Length:X4} * {name}");
}
section.Content.WriteBytes(objectData.Data);
if (objectData.DefinedSymbols != null)
{
foreach (ISymbolDefinitionNode symbol in objectData.DefinedSymbols)
{
if (mapFile != null)
{
Utf8StringBuilder sb = new Utf8StringBuilder();
symbol.AppendMangledName(GetNameMangler(), sb);
int sectionRelativeOffset = alignedOffset + symbol.Offset;
mapFile.WriteLine($@" +0x{sectionRelativeOffset:X4}: {sb.ToString()}");
}
_symbolMap.Add(symbol, new SymbolTarget(
sectionIndex: sectionIndex,
offset: alignedOffset + symbol.Offset));
}
}
if (objectData.Relocs != null && objectData.Relocs.Length != 0)
{
section.PlacedObjectDataToRelocate.Add(new PlacedObjectData(alignedOffset, objectData));
}
}
public void PublishUnwindInfo(ObjectNode node)
{
INodeWithCodeInfo nodeWithCodeInfo = node as INodeWithCodeInfo;
if (nodeWithCodeInfo == null)
{
return;
}
FrameInfo[] frameInfos = nodeWithCodeInfo.FrameInfos;
if (frameInfos == null)
{
// Data should only be present if the method has unwind info
Debug.Assert(nodeWithCodeInfo.GetAssociatedDataNode(_nodeFactory) == null);
return;
}
byte[] gcInfo = nodeWithCodeInfo.GCInfo;
ObjectData ehInfo = nodeWithCodeInfo.EHInfo;
ISymbolNode associatedDataNode = nodeWithCodeInfo.GetAssociatedDataNode(_nodeFactory);
for (int i = 0; i < frameInfos.Length; i++)
{
FrameInfo frameInfo = frameInfos[i];
int start = frameInfo.StartOffset;
int end = frameInfo.EndOffset;
int len = frameInfo.BlobData.Length;
byte[] blob = frameInfo.BlobData;
_sb.Clear().Append(_nodeFactory.NameMangler.CompilationUnitPrefix).Append("_unwind").Append(i.ToStringInvariant());
byte[] blobSymbolName = _sb.Append(_currentNodeZeroTerminatedName).ToUtf8String().UnderlyingArray;
ObjectNodeSection section = ObjectNodeSection.XDataSection;
if (ShouldShareSymbol(node))
{
section = GetSharedSection(section, _sb.ToString());
}
SwitchSection(_nativeObjectWriter, section.Name, GetCustomSectionAttributes(section), section.ComdatName);
EmitAlignment(4);
EmitSymbolDef(blobSymbolName);
FrameInfoFlags flags = frameInfo.Flags;
flags |= ehInfo != null ? FrameInfoFlags.HasEHInfo : 0;
flags |= associatedDataNode != null ? FrameInfoFlags.HasAssociatedData : 0;
EmitBlob(blob);
EmitIntValue((byte)flags, 1);
if (associatedDataNode != null)
{
EmitSymbolRef(_sb.Clear().Append(associatedDataNode.GetMangledName(_nodeFactory.NameMangler)), RelocType.IMAGE_REL_BASED_ABSOLUTE);
associatedDataNode = null;
}
if (ehInfo != null)
{
EmitSymbolRef(_sb.Clear().Append(_nodeFactory.NameMangler.CompilationUnitPrefix).Append("_ehInfo").Append(_currentNodeZeroTerminatedName), RelocType.IMAGE_REL_BASED_ABSOLUTE);
}
if (gcInfo != null)
{
EmitBlob(gcInfo);
gcInfo = null;
}
if (ehInfo != null)
{
// TODO: Place EHInfo into different section for better locality
Debug.Assert(ehInfo.Alignment == 1);
Debug.Assert(ehInfo.DefinedSymbols.Length == 0);
EmitSymbolDef(_sb /* ehInfo */);
EmitBlobWithRelocs(ehInfo.Data, ehInfo.Relocs);
ehInfo = null;
}
// For window, just emit the frame blob (UNWIND_INFO) as a whole.
EmitWinFrameInfo(start, end, len, blobSymbolName);
EnsureCurrentSection();
}
}
public void BuildCFIMap(NodeFactory factory, ObjectNode node)
{
_offsetToCfis.Clear();
_offsetToCfiStart.Clear();
_offsetToCfiEnd.Clear();
_offsetToCfiLsdaBlobName.Clear();
_frameOpened = false;
INodeWithCodeInfo nodeWithCodeInfo = node as INodeWithCodeInfo;
if (nodeWithCodeInfo == null)
{
return;
}
FrameInfo[] frameInfos = nodeWithCodeInfo.FrameInfos;
if (frameInfos == null)
{
return;
}
byte[] gcInfo = nodeWithCodeInfo.GCInfo;
ObjectNode.ObjectData ehInfo = nodeWithCodeInfo.EHInfo;
for (int i = 0; i < frameInfos.Length; i++)
{
FrameInfo frameInfo = frameInfos[i];
int start = frameInfo.StartOffset;
int end = frameInfo.EndOffset;
int len = frameInfo.BlobData.Length;
byte[] blob = frameInfo.BlobData;
if (_targetPlatform.OperatingSystem == TargetOS.Windows)
{
_sb.Clear().Append("_unwind").Append(i.ToStringInvariant());
ObjectNodeSection section = ObjectNodeSection.XDataSection;
if (node.ShouldShareNodeAcrossModules(factory) && factory.Target.OperatingSystem == TargetOS.Windows)
{
section = section.GetSharedSection(_sb.ToString());
CreateCustomSection(section);
}
SwitchSection(_nativeObjectWriter, section.Name);
byte[] blobSymbolName = _sb.Append(_currentNodeZeroTerminatedName).ToUtf8String().UnderlyingArray;
EmitAlignment(4);
EmitSymbolDef(blobSymbolName);
FrameInfoFlags flags = frameInfo.Flags;
if (ehInfo != null)
{
flags |= FrameInfoFlags.HasEHInfo;
}
EmitBlob(blob);
EmitIntValue((byte)flags, 1);
if (ehInfo != null)
{
EmitSymbolRef(_sb.Clear().Append("_ehInfo").Append(_currentNodeZeroTerminatedName), RelocType.IMAGE_REL_BASED_ABSOLUTE);
}
if (gcInfo != null)
{
EmitBlob(gcInfo);
gcInfo = null;
}
if (ehInfo != null)
{
// TODO: Place EHInfo into different section for better locality
Debug.Assert(ehInfo.Alignment == 1);
Debug.Assert(ehInfo.DefinedSymbols.Length == 0);
EmitSymbolDef(_sb /* ehInfo */);
EmitBlobWithRelocs(ehInfo.Data, ehInfo.Relocs);
ehInfo = null;
}
// TODO: Currently we get linker errors if we emit frame info for shared types.
// This needs follow-up investigation.
if (!node.ShouldShareNodeAcrossModules(factory))
{
// For window, just emit the frame blob (UNWIND_INFO) as a whole.
EmitWinFrameInfo(start, end, len, blobSymbolName);
}
}
else
{
SwitchSection(_nativeObjectWriter, LsdaSection.Name);
_sb.Clear().Append("_lsda").Append(i.ToStringInvariant()).Append(_currentNodeZeroTerminatedName);
byte[] blobSymbolName = _sb.ToUtf8String().UnderlyingArray;
EmitSymbolDef(blobSymbolName);
FrameInfoFlags flags = frameInfo.Flags;
if (ehInfo != null)
{
flags |= FrameInfoFlags.HasEHInfo;
}
EmitIntValue((byte)flags, 1);
if (i != 0)
{
EmitSymbolRef(_sb.Clear().Append("_lsda0").Append(_currentNodeZeroTerminatedName), RelocType.IMAGE_REL_BASED_REL32, 4);
// emit relative offset from the main function
EmitIntValue((ulong)(start - frameInfos[0].StartOffset), 4);
}
if (ehInfo != null)
{
EmitSymbolRef(_sb.Clear().Append("_ehInfo").Append(_currentNodeZeroTerminatedName), RelocType.IMAGE_REL_BASED_REL32, 4);
}
if (gcInfo != null)
{
EmitBlob(gcInfo);
gcInfo = null;
}
if (ehInfo != null)
{
// TODO: Place EHInfo into different section for better locality
Debug.Assert(ehInfo.Alignment == 1);
Debug.Assert(ehInfo.DefinedSymbols.Length == 0);
EmitSymbolDef(_sb /* ehInfo */);
EmitBlobWithRelocs(ehInfo.Data, ehInfo.Relocs);
ehInfo = null;
}
// For Unix, we build CFI blob map for each offset.
Debug.Assert(len % CfiCodeSize == 0);
// Record start/end of frames which shouldn't be overlapped.
_offsetToCfiStart.Add(start);
_offsetToCfiEnd.Add(end);
_offsetToCfiLsdaBlobName.Add(start, blobSymbolName);
for (int j = 0; j < len; j += CfiCodeSize)
{
// The first byte of CFI_CODE is offset from the range the frame covers.
// Compute code offset from the root method.
int codeOffset = blob[j] + start;
List <byte[]> cfis;
if (!_offsetToCfis.TryGetValue(codeOffset, out cfis))
{
cfis = new List <byte[]>();
_offsetToCfis.Add(codeOffset, cfis);
}
byte[] cfi = new byte[CfiCodeSize];
Array.Copy(blob, j, cfi, 0, CfiCodeSize);
cfis.Add(cfi);
}
}
EnsureCurrentSection();
}
}