private void SerializeMethodBodyTable(BlobBuilder writer, MetadataSizes metadataSizes)
{
foreach (var row in _methodBodyTable)
{
writer.WriteReference((uint)_debugHeapsOpt.ResolveBlobIndex(row.SequencePoints), metadataSizes.BlobIndexSize);
}
}
private void SerializeLocalConstantTable(BlobBuilder writer, MetadataSizes metadataSizes)
{
foreach (var row in _localConstantTable)
{
writer.WriteReference((uint)_debugHeapsOpt.ResolveStringIndex(row.Name), metadataSizes.StringIndexSize);
writer.WriteReference((uint)_debugHeapsOpt.ResolveBlobIndex(row.Signature), metadataSizes.BlobIndexSize);
}
}
private void SerializeImportScopeTable(BlobBuilder writer, MetadataSizes metadataSizes)
{
foreach (var row in _importScopeTable)
{
writer.WriteReference(row.Parent, metadataSizes.ImportScopeIndexSize);
writer.WriteReference((uint)_debugHeapsOpt.ResolveBlobIndex(row.Imports), metadataSizes.BlobIndexSize);
}
}
private void SerializeStateMachineMethodTable(BlobBuilder writer, MetadataSizes metadataSizes)
{
foreach (var row in _stateMachineMethodTable)
{
writer.WriteReference(row.MoveNextMethod, metadataSizes.MethodDefIndexSize);
writer.WriteReference(row.KickoffMethod, metadataSizes.MethodDefIndexSize);
}
}
private void SerializeLocalVariableTable(BlobBuilder writer, MetadataSizes metadataSizes)
{
foreach (var row in _localVariableTable)
{
writer.WriteUInt16(row.Attributes);
writer.WriteUInt16(row.Index);
writer.WriteReference((uint)_debugHeapsOpt.ResolveStringIndex(row.Name), metadataSizes.StringIndexSize);
}
}
private void SerializeDocumentTable(BlobBuilder writer, MetadataSizes metadataSizes)
{
foreach (var row in _documentTable)
{
writer.WriteReference((uint)_debugHeapsOpt.ResolveBlobIndex(row.Name), metadataSizes.BlobIndexSize);
writer.WriteReference(row.HashAlgorithm, metadataSizes.GuidIndexSize);
writer.WriteReference((uint)_debugHeapsOpt.ResolveBlobIndex(row.Hash), metadataSizes.BlobIndexSize);
writer.WriteReference(row.Language, metadataSizes.GuidIndexSize);
}
}
private void SerializeCustomDebugInformationTable(BlobBuilder writer, MetadataSizes metadataSizes)
{
// sort by Parent, Kind
_customDebugInformationTable.Sort(CustomDebugInformationRowComparer.Instance);
foreach (var row in _customDebugInformationTable)
{
writer.WriteReference(row.Parent, metadataSizes.HasCustomDebugInformationSize);
writer.WriteReference(row.Kind, metadataSizes.GuidIndexSize);
writer.WriteReference((uint)_debugHeapsOpt.ResolveBlobIndex(row.Value), metadataSizes.BlobIndexSize);
}
}
private void SerializeLocalScopeTable(BlobBuilder writer, MetadataSizes metadataSizes)
{
foreach (var row in _localScopeTable)
{
writer.WriteReference(row.Method, metadataSizes.MethodDefIndexSize);
writer.WriteReference(row.ImportScope, metadataSizes.ImportScopeIndexSize);
writer.WriteReference(row.VariableList, metadataSizes.LocalVariableIndexSize);
writer.WriteReference(row.ConstantList, metadataSizes.LocalConstantIndexSize);
writer.WriteUInt32(row.StartOffset);
writer.WriteUInt32(row.Length);
}
}
private uint ComputeOffsetToDebugTable(MetadataSizes metadataSizes)
{
uint result = this.ComputeOffsetToMetadata(metadataSizes.ILStreamSize);
result += (uint)metadataSizes.MetadataSize;
result += (uint)metadataSizes.ResourceDataSize;
result += this.ComputeStrongNameSignatureSize(); // size of strong name hash
return result;
}
private uint ComputeOffsetToImportTable(MetadataSizes metadataSizes)
{
uint result = this.ComputeOffsetToDebugTable(metadataSizes);
result += this.ComputeSizeOfDebugTable(result);
result += 0; // TODO: size of unmanaged export stubs (when and if these are ever supported).
return result;
}
private readonly static byte[] s_zeroStamp = new byte[4]; // four bytes of zero
/// <summary>
/// Write the entire "Debug Directory (Image Only)" along with data that it points to.
/// </summary>
private void WriteDebugTable(Stream peStream, SectionHeader textSection, ContentId nativePdbContentId, ContentId portablePdbContentId, MetadataSizes metadataSizes)
{
int tableSize = ImageDebugDirectoryBaseSize;
Debug.Assert(tableSize != 0);
Debug.Assert(nativePdbContentId.IsDefault || portablePdbContentId.IsDefault);
Debug.Assert(!EmitPdb || (nativePdbContentId.IsDefault ^ portablePdbContentId.IsDefault));
var writer = PooledBlobBuilder.GetInstance();
int dataSize = ComputeSizeOfDebugDirectoryData();
if (this.EmitPdb)
{
const int IMAGE_DEBUG_TYPE_CODEVIEW = 2; // from PE spec
uint dataOffset = (uint)(ComputeOffsetToDebugTable(metadataSizes) + tableSize);
WriteDebugTableEntry(writer,
stamp: nativePdbContentId.Stamp ?? portablePdbContentId.Stamp,
version: portablePdbContentId.IsDefault ? (uint)0 : ('P' << 24 | 'M' << 16 | 0x01 << 8 | 0x00),
debugType: IMAGE_DEBUG_TYPE_CODEVIEW,
sizeOfData: (uint)dataSize,
addressOfRawData: (uint)textSection.RelativeVirtualAddress + dataOffset, // RVA of the data
pointerToRawData: (uint)textSection.PointerToRawData + dataOffset); // position of the data in the PE stream
}
if (_deterministic)
{
const int IMAGE_DEBUG_TYPE_NO_TIMESTAMP = 16; // from PE spec
WriteDebugTableEntry(writer,
stamp: s_zeroStamp,
version: 0,
debugType: IMAGE_DEBUG_TYPE_NO_TIMESTAMP,
sizeOfData: 0,
addressOfRawData: 0,
pointerToRawData: 0);
}
// We should now have written all and precisely the data we said we'd write for the table entries.
Debug.Assert(writer.Count == tableSize);
// ====================
// The following is additional data beyond the debug directory at the offset `dataOffset`
// pointed to by the ImageDebugTypeCodeView entry.
if (EmitPdb)
{
writer.WriteByte((byte)'R');
writer.WriteByte((byte)'S');
writer.WriteByte((byte)'D');
writer.WriteByte((byte)'S');
// PDB id:
writer.WriteBytes(nativePdbContentId.Guid ?? portablePdbContentId.Guid);
// age
writer.WriteUInt32(PdbWriter.Age);
// UTF-8 encoded zero-terminated path to PDB
int pathStart = writer.Position;
writer.WriteUTF8(_pdbPathOpt, allowUnpairedSurrogates: true);
writer.WriteByte(0);
// padding:
writer.WriteBytes(0, Math.Max(0, _minPdbPath - (writer.Position - pathStart)));
}
// We should now have written all and precisely the data we said we'd write for the table and its data.
Debug.Assert(writer.Count == tableSize + dataSize);
writer.WriteContentTo(peStream);
writer.Free();
}
private int CalculateMappedFieldDataStreamRva(MetadataSizes metadataSizes)
{
FillInTextSectionHeader(metadataSizes);
Debug.Assert(metadataSizes.MappedFieldDataSize % MetadataWriter.MappedFieldDataAlignment == 0);
return (int)(_textSection.RelativeVirtualAddress + _textSection.VirtualSize - metadataSizes.MappedFieldDataSize);
}
private int ComputeOffsetToDebugTable(MetadataSizes metadataSizes)
{
Debug.Assert(metadataSizes.MetadataSize % 4 == 0);
Debug.Assert(metadataSizes.ResourceDataSize % 4 == 0);
return
ComputeOffsetToMetadata(metadataSizes.ILStreamSize) +
metadataSizes.MetadataSize +
metadataSizes.ResourceDataSize +
metadataSizes.StrongNameSignatureSize;
}
private int CalculateOffsetToMappedFieldDataStream(MetadataSizes metadataSizes)
{
int result = ComputeOffsetToImportTable(metadataSizes);
if (_properties.RequiresStartupStub)
{
result += SizeOfImportTable + SizeOfNameTable;
result = BitArithmeticUtilities.Align(result, _is32bit ? 4 : 8); //optional padding to make startup stub's target address align on word or double word boundary
result += SizeOfRuntimeStartupStub;
}
return result;
}
private void WriteDebugTable(Stream peStream, SectionHeader textSection, ContentId nativePdbContentId, ContentId portablePdbContentId, MetadataSizes metadataSizes)
{
Debug.Assert(nativePdbContentId.IsDefault ^ portablePdbContentId.IsDefault);
var writer = PooledBlobBuilder.GetInstance();
// characteristics:
writer.WriteUInt32(0);
// PDB stamp & version
if (portablePdbContentId.IsDefault)
{
writer.WriteBytes(nativePdbContentId.Stamp);
writer.WriteUInt32(0);
}
else
{
writer.WriteBytes(portablePdbContentId.Stamp);
writer.WriteUInt32('P' << 24 | 'M' << 16 | 0x00 << 8 | 0x01);
}
// type:
const int ImageDebugTypeCodeView = 2;
writer.WriteUInt32(ImageDebugTypeCodeView);
// size of data:
writer.WriteUInt32((uint)ComputeSizeOfDebugDirectoryData());
uint dataOffset = (uint)ComputeOffsetToDebugTable(metadataSizes) + ImageDebugDirectoryBaseSize;
// PointerToRawData (RVA of the data):
writer.WriteUInt32((uint)textSection.RelativeVirtualAddress + dataOffset);
// AddressOfRawData (position of the data in the PE stream):
writer.WriteUInt32((uint)textSection.PointerToRawData + dataOffset);
writer.WriteByte((byte)'R');
writer.WriteByte((byte)'S');
writer.WriteByte((byte)'D');
writer.WriteByte((byte)'S');
// PDB id:
writer.WriteBytes(nativePdbContentId.Guid ?? portablePdbContentId.Guid);
// age
writer.WriteUInt32(PdbWriter.Age);
// UTF-8 encoded zero-terminated path to PDB
writer.WriteUTF8(_pdbPathOpt, allowUnpairedSurrogates: true);
writer.WriteByte(0);
writer.WriteContentTo(peStream);
writer.Free();
}
private void FillInTextSectionHeader(MetadataSizes metadataSizes)
{
if (_textSection == null)
{
uint sizeOfPeHeaders = (uint)ComputeSizeOfPeHeaders();
uint sizeOfTextSection = (uint)ComputeSizeOfTextSection(metadataSizes);
_textSection = new SectionHeader
{
Characteristics = 0x60000020, // section is read + execute + code
Name = ".text",
NumberOfLinenumbers = 0,
NumberOfRelocations = 0,
PointerToLinenumbers = 0,
PointerToRawData = BitArithmeticUtilities.Align(sizeOfPeHeaders, _module.FileAlignment),
PointerToRelocations = 0,
RelativeVirtualAddress = BitArithmeticUtilities.Align(sizeOfPeHeaders, 0x2000),
SizeOfRawData = BitArithmeticUtilities.Align(sizeOfTextSection, _module.FileAlignment),
VirtualSize = sizeOfTextSection
};
}
}
private void FillInNtHeader(MetadataSizes metadataSizes, int mappedFieldDataStreamRva)
{
bool use32bitAddresses = !_module.Requires64bits;
NtHeader ntHeader = _ntHeader;
ntHeader.AddressOfEntryPoint = _emitRuntimeStartupStub ? (uint)mappedFieldDataStreamRva - (use32bitAddresses ? 6u : 10u) : 0;
ntHeader.BaseOfCode = _textSection.RelativeVirtualAddress;
ntHeader.BaseOfData = _rdataSection.RelativeVirtualAddress;
ntHeader.PointerToSymbolTable = 0;
ntHeader.SizeOfCode = _textSection.SizeOfRawData;
ntHeader.SizeOfInitializedData = _rdataSection.SizeOfRawData + _coverSection.SizeOfRawData + _sdataSection.SizeOfRawData + _tlsSection.SizeOfRawData + _resourceSection.SizeOfRawData + _relocSection.SizeOfRawData;
ntHeader.SizeOfHeaders = BitArithmeticUtilities.Align(this.ComputeSizeOfPeHeaders(), _module.FileAlignment);
ntHeader.SizeOfImage = BitArithmeticUtilities.Align(_relocSection.RelativeVirtualAddress + _relocSection.VirtualSize, 0x2000);
ntHeader.SizeOfUninitializedData = 0;
// In the PE File Header this is a "Time/Date Stamp" whose description is "Time and date
// the file was created in seconds since January 1st 1970 00:00:00 or 0"
// However, when we want to make it deterministic we fill it in (later) with bits from the hash of the full PE file.
ntHeader.TimeDateStamp = _deterministic ? 0 : (uint)(DateTime.UtcNow - new DateTime(1970, 1, 1)).TotalSeconds;
ntHeader.ImportAddressTable.RelativeVirtualAddress = (_emitRuntimeStartupStub) ? _textSection.RelativeVirtualAddress : 0;
ntHeader.ImportAddressTable.Size = (uint)_sizeOfImportAddressTable;
ntHeader.CliHeaderTable.RelativeVirtualAddress = _textSection.RelativeVirtualAddress + ntHeader.ImportAddressTable.Size;
ntHeader.CliHeaderTable.Size = 72;
ntHeader.ImportTable.RelativeVirtualAddress = _textSection.RelativeVirtualAddress + (uint)ComputeOffsetToImportTable(metadataSizes);
if (!_emitRuntimeStartupStub)
{
ntHeader.ImportTable.Size = 0;
ntHeader.ImportTable.RelativeVirtualAddress = 0;
}
else
{
ntHeader.ImportTable.Size = use32bitAddresses ? 66u : 70u;
ntHeader.ImportTable.Size += 13; //size of nametable
}
ntHeader.BaseRelocationTable.RelativeVirtualAddress = (_emitRuntimeStartupStub) ? _relocSection.RelativeVirtualAddress : 0;
ntHeader.BaseRelocationTable.Size = _relocSection.VirtualSize;
ntHeader.BoundImportTable.RelativeVirtualAddress = 0;
ntHeader.BoundImportTable.Size = 0;
ntHeader.CertificateTable.RelativeVirtualAddress = 0;
ntHeader.CertificateTable.Size = 0;
ntHeader.CopyrightTable.RelativeVirtualAddress = 0;
ntHeader.CopyrightTable.Size = 0;
ntHeader.DebugTable.RelativeVirtualAddress = EmitPdb ? _textSection.RelativeVirtualAddress + (uint)ComputeOffsetToDebugTable(metadataSizes) : 0u;
ntHeader.DebugTable.Size = EmitPdb ? ImageDebugDirectoryBaseSize : 0u; // Only the size of the fixed part of the debug table goes here.
ntHeader.DelayImportTable.RelativeVirtualAddress = 0;
ntHeader.DelayImportTable.Size = 0;
ntHeader.ExceptionTable.RelativeVirtualAddress = 0;
ntHeader.ExceptionTable.Size = 0;
ntHeader.ExportTable.RelativeVirtualAddress = 0;
ntHeader.ExportTable.Size = 0;
ntHeader.GlobalPointerTable.RelativeVirtualAddress = 0;
ntHeader.GlobalPointerTable.Size = 0;
ntHeader.LoadConfigTable.RelativeVirtualAddress = 0;
ntHeader.LoadConfigTable.Size = 0;
ntHeader.Reserved.RelativeVirtualAddress = 0;
ntHeader.Reserved.Size = 0;
ntHeader.ResourceTable.RelativeVirtualAddress = _resourceSection.SizeOfRawData == 0 ? 0u : _resourceSection.RelativeVirtualAddress;
ntHeader.ResourceTable.Size = _resourceSection.VirtualSize;
ntHeader.ThreadLocalStorageTable.RelativeVirtualAddress = _tlsSection.SizeOfRawData == 0 ? 0u : _tlsSection.RelativeVirtualAddress;
ntHeader.ThreadLocalStorageTable.Size = _tlsSection.SizeOfRawData;
}
private CorHeader CreateCorHeader(MetadataSizes metadataSizes, int entryPointToken)
{
CorHeader corHeader = new CorHeader();
corHeader.CodeManagerTable.RelativeVirtualAddress = 0;
corHeader.CodeManagerTable.Size = 0;
corHeader.EntryPointToken = (uint)entryPointToken;
corHeader.ExportAddressTableJumps.RelativeVirtualAddress = 0;
corHeader.ExportAddressTableJumps.Size = 0;
corHeader.Flags = this.GetCorHeaderFlags();
corHeader.MajorRuntimeVersion = 2;
corHeader.MetadataDirectory.RelativeVirtualAddress = _textSection.RelativeVirtualAddress + (uint)ComputeOffsetToMetadata(metadataSizes.ILStreamSize);
corHeader.MetadataDirectory.Size = (uint)metadataSizes.MetadataSize;
corHeader.MinorRuntimeVersion = 5;
corHeader.Resources.RelativeVirtualAddress = corHeader.MetadataDirectory.RelativeVirtualAddress + corHeader.MetadataDirectory.Size;
corHeader.Resources.Size = (uint)metadataSizes.ResourceDataSize;
corHeader.StrongNameSignature.RelativeVirtualAddress = corHeader.Resources.RelativeVirtualAddress + corHeader.Resources.Size;
corHeader.StrongNameSignature.Size = (uint)ComputeStrongNameSignatureSize();
corHeader.VTableFixups.RelativeVirtualAddress = 0;
corHeader.VTableFixups.Size = 0;
return corHeader;
}
private int ComputeSizeOfTextSection(MetadataSizes metadataSizes)
{
int textSectionLength = this.ComputeOffsetToImportTable(metadataSizes);
if (_emitRuntimeStartupStub)
{
textSectionLength += !_module.Requires64bits ? 66 : 70; //size of import table
textSectionLength += 14; //size of name table
textSectionLength = BitArithmeticUtilities.Align(textSectionLength, !_module.Requires64bits ? 4 : 8); //optional padding to make startup stub's target address align on word or double word boundary
textSectionLength += !_module.Requires64bits ? 8 : 16; //fixed size of runtime startup stub
}
Debug.Assert(metadataSizes.MappedFieldDataSize % MetadataWriter.MappedFieldDataAlignment == 0);
textSectionLength += metadataSizes.MappedFieldDataSize;
return textSectionLength;
}
private int ComputeOffsetToImportTable(MetadataSizes metadataSizes)
{
// TODO: add size of unmanaged export stubs (when and if these are ever supported).
return
ComputeOffsetToDebugTable(metadataSizes) +
ComputeSizeOfDebugDirectory();
}
private int ComputeOffsetToDebugTable(MetadataSizes metadataSizes)
{
return
ComputeOffsetToMetadata(metadataSizes.ILStreamSize) +
metadataSizes.MetadataSize +
metadataSizes.ResourceDataSize +
ComputeStrongNameSignatureSize(); // size of strong name hash
}
private void WriteTextSection(
Stream peStream,
SectionHeader textSection,
int importTableRva,
int importAddressTableRva,
int entryPointToken,
BlobBuilder metadataWriter,
BlobBuilder ilWriter,
BlobBuilder mappedFieldDataWriter,
BlobBuilder managedResourceWriter,
MetadataSizes metadataSizes,
ContentId nativePdbContentId,
ContentId portablePdbContentId,
out long metadataPosition)
{
// TODO: zero out all bytes:
peStream.Position = textSection.PointerToRawData;
if (_properties.RequiresStartupStub)
{
WriteImportAddressTable(peStream, importTableRva);
}
var corHeader = CreateCorHeader(metadataSizes, textSection.RelativeVirtualAddress, entryPointToken);
WriteCorHeader(peStream, corHeader);
// IL:
ilWriter.Align(4);
ilWriter.WriteContentTo(peStream);
// metadata:
metadataPosition = peStream.Position;
Debug.Assert(metadataWriter.Count % 4 == 0);
metadataWriter.WriteContentTo(peStream);
// managed resources:
Debug.Assert(managedResourceWriter.Count % 4 == 0);
managedResourceWriter.WriteContentTo(peStream);
// strong name signature:
WriteSpaceForHash(peStream, metadataSizes.StrongNameSignatureSize);
if (EmitPdb)
{
WriteDebugTable(peStream, textSection, nativePdbContentId, portablePdbContentId, metadataSizes);
}
if (_properties.RequiresStartupStub)
{
WriteImportTable(peStream, importTableRva, importAddressTableRva);
WriteNameTable(peStream);
WriteRuntimeStartupStub(peStream, importAddressTableRva);
}
// mapped field data:
mappedFieldDataWriter.WriteContentTo(peStream);
// TODO: zero out all bytes:
int alignedPosition = textSection.PointerToRawData + textSection.SizeOfRawData;
if (peStream.Position != alignedPosition)
{
peStream.Position = alignedPosition - 1;
peStream.WriteByte(0);
}
}
private int ComputeSizeOfTextSection(MetadataSizes metadataSizes)
{
Debug.Assert(metadataSizes.MappedFieldDataSize % MetadataWriter.MappedFieldDataAlignment == 0);
return CalculateOffsetToMappedFieldDataStream(metadataSizes) + metadataSizes.MappedFieldDataSize;
}
private List<SectionHeader> CreateSectionHeaders(MetadataSizes metadataSizes, int sectionCount)
{
var sectionHeaders = new List<SectionHeader>();
SectionHeader lastSection;
int sizeOfPeHeaders = ComputeSizeOfPeHeaders(sectionCount);
int sizeOfTextSection = ComputeSizeOfTextSection(metadataSizes);
sectionHeaders.Add(lastSection = new SectionHeader(
characteristics: SectionCharacteristics.MemRead |
SectionCharacteristics.MemExecute |
SectionCharacteristics.ContainsCode,
name: ".text",
numberOfLinenumbers: 0,
numberOfRelocations: 0,
pointerToLinenumbers: 0,
pointerToRawData: BitArithmeticUtilities.Align(sizeOfPeHeaders, _properties.FileAlignment),
pointerToRelocations: 0,
relativeVirtualAddress: BitArithmeticUtilities.Align(sizeOfPeHeaders, _properties.SectionAlignment),
sizeOfRawData: BitArithmeticUtilities.Align(sizeOfTextSection, _properties.FileAlignment),
virtualSize: sizeOfTextSection
));
int resourcesRva = BitArithmeticUtilities.Align(lastSection.RelativeVirtualAddress + lastSection.VirtualSize, _properties.SectionAlignment);
int sizeOfWin32Resources = this.ComputeSizeOfWin32Resources(resourcesRva);
if (sizeOfWin32Resources > 0)
{
sectionHeaders.Add(lastSection = new SectionHeader(
characteristics: SectionCharacteristics.MemRead |
SectionCharacteristics.ContainsInitializedData,
name: ResourceSectionName,
numberOfLinenumbers: 0,
numberOfRelocations: 0,
pointerToLinenumbers: 0,
pointerToRawData: lastSection.PointerToRawData + lastSection.SizeOfRawData,
pointerToRelocations: 0,
relativeVirtualAddress: resourcesRva,
sizeOfRawData: BitArithmeticUtilities.Align(sizeOfWin32Resources, _properties.FileAlignment),
virtualSize: sizeOfWin32Resources
));
}
if (_properties.RequiresStartupStub)
{
var size = (_properties.Requires64bits && !_properties.RequiresAmdInstructionSet) ? 14 : 12; // TODO: constants
sectionHeaders.Add(lastSection = new SectionHeader(
characteristics: SectionCharacteristics.MemRead |
SectionCharacteristics.MemDiscardable |
SectionCharacteristics.ContainsInitializedData,
name: RelocationSectionName,
numberOfLinenumbers: 0,
numberOfRelocations: 0,
pointerToLinenumbers: 0,
pointerToRawData: lastSection.PointerToRawData + lastSection.SizeOfRawData,
pointerToRelocations: 0,
relativeVirtualAddress: BitArithmeticUtilities.Align(lastSection.RelativeVirtualAddress + lastSection.VirtualSize, _properties.SectionAlignment),
sizeOfRawData: BitArithmeticUtilities.Align(size, _properties.FileAlignment),
virtualSize: size));
}
Debug.Assert(sectionHeaders.Count == sectionCount);
return sectionHeaders;
}
private void FillInTextSectionHeader(MetadataSizes metadataSizes)
{
if (_textSection == null)
{
int sizeOfPeHeaders = ComputeSizeOfPeHeaders();
int sizeOfTextSection = ComputeSizeOfTextSection(metadataSizes);
_textSection = new SectionHeader(
characteristics: SectionCharacteristics.MemRead |
SectionCharacteristics.MemExecute |
SectionCharacteristics.ContainsCode,
name: ".text",
numberOfLinenumbers: 0,
numberOfRelocations: 0,
pointerToLinenumbers: 0,
pointerToRawData: BitArithmeticUtilities.Align(sizeOfPeHeaders, _properties.FileAlignment),
pointerToRelocations: 0,
relativeVirtualAddress: BitArithmeticUtilities.Align(sizeOfPeHeaders, 0x2000),
sizeOfRawData: BitArithmeticUtilities.Align(sizeOfTextSection, _properties.FileAlignment),
virtualSize: sizeOfTextSection
);
}
}
private int CalculateMappedFieldDataStreamRva(int textSectionRva, MetadataSizes metadataSizes)
{
return textSectionRva + CalculateOffsetToMappedFieldDataStream(metadataSizes);
}
private void WriteTextSection(
Stream peStream,
CorHeader corHeader,
BlobWriter metadataWriter,
BlobWriter ilStream,
BlobWriter mappedFieldDataWriter,
BlobWriter managedResourceWriter,
MetadataSizes metadataSizes,
ContentId pdbContentId,
out long metadataPosition)
{
peStream.Position = _textSection.PointerToRawData;
if (_emitRuntimeStartupStub)
{
this.WriteImportAddressTable(peStream);
}
WriteCorHeader(peStream, corHeader);
WriteIL(peStream, ilStream);
metadataPosition = peStream.Position;
WriteMetadata(peStream, metadataWriter);
WriteManagedResources(peStream, managedResourceWriter);
WriteSpaceForHash(peStream, (int)corHeader.StrongNameSignature.Size);
WriteDebugTable(peStream, pdbContentId, metadataSizes);
if (_emitRuntimeStartupStub)
{
WriteImportTable(peStream);
WriteNameTable(peStream);
WriteRuntimeStartupStub(peStream);
}
WriteMappedFieldData(peStream, mappedFieldDataWriter);
}
private int ComputeOffsetToImportTable(MetadataSizes metadataSizes)
{
return
ComputeOffsetToDebugTable(metadataSizes) +
ComputeSizeOfDebugDirectory();
}
private void WriteDebugTable(Stream peStream, ContentId nativePdbContentId, MetadataSizes metadataSizes)
{
if (!EmitPdb)
{
return;
}
var writer = new BlobWriter();
// characteristics:
writer.WriteUint(0);
// PDB stamp
writer.WriteBytes(nativePdbContentId.Stamp);
// version
writer.WriteUint(0);
// type:
const int ImageDebugTypeCodeView = 2;
writer.WriteUint(ImageDebugTypeCodeView);
// size of data:
writer.WriteUint((uint)ComputeSizeOfDebugDirectoryData());
uint dataOffset = (uint)ComputeOffsetToDebugTable(metadataSizes) + ImageDebugDirectoryBaseSize;
// PointerToRawData (RVA of the data):
writer.WriteUint(_textSection.RelativeVirtualAddress + dataOffset);
// AddressOfRawData (position of the data in the PE stream):
writer.WriteUint(_textSection.PointerToRawData + dataOffset);
writer.WriteByte((byte)'R');
writer.WriteByte((byte)'S');
writer.WriteByte((byte)'D');
writer.WriteByte((byte)'S');
// PDB id:
writer.WriteBytes(nativePdbContentId.Guid);
// age
writer.WriteUint(PdbWriter.Age);
// UTF-8 encoded zero-terminated path to PDB
writer.WriteUTF8(_pdbPathOpt);
writer.WriteByte(0);
writer.WriteTo(peStream);
writer.Free();
}
private CorHeader CreateCorHeader(MetadataSizes metadataSizes, int textSectionRva, int entryPointToken)
{
int metadataRva = textSectionRva + ComputeOffsetToMetadata(metadataSizes.ILStreamSize);
int resourcesRva = metadataRva + metadataSizes.MetadataSize;
int signatureRva = resourcesRva + metadataSizes.ResourceDataSize;
return new CorHeader(
entryPointTokenOrRelativeVirtualAddress: entryPointToken,
flags: _properties.GetCorHeaderFlags(),
metadataDirectory: new DirectoryEntry(metadataRva, metadataSizes.MetadataSize),
resourcesDirectory: new DirectoryEntry(resourcesRva, metadataSizes.ResourceDataSize),
strongNameSignatureDirectory: new DirectoryEntry(signatureRva, metadataSizes.StrongNameSignatureSize));
}
private void FillInNtHeader(MetadataSizes metadataSizes, int mappedFieldDataStreamRva)
{
// In the PE File Header this is a "Time/Date Stamp" whose description is "Time and date
// the file was created in seconds since January 1st 1970 00:00:00 or 0"
// However, when we want to make it deterministic we fill it in (later) with bits from the hash of the full PE file.
int timeStamp = _deterministic ? 0 : (int)(DateTime.UtcNow - new DateTime(1970, 1, 1)).TotalSeconds;
int textSectionRva = _textSection.RelativeVirtualAddress;
_coffHeader = new CoffHeader(
machine: (_properties.Machine == 0) ? Machine.I386 : _properties.Machine,
numberOfSections: GetSectionCount(),
timeDateStamp: timeStamp,
pointerToSymbolTable: 0,
numberOfSymbols: 0,
sizeOfOptionalHeader: (short)(_is32bit ? 224 : 240), // TODO: constants
characteristics: _properties.ImageCharacteristics);
var ntHeader = _ntHeader = new NtHeader();
ntHeader.Magic = _is32bit ? PEMagic.PE32 : PEMagic.PE32Plus;
ntHeader.MajorLinkerVersion = _properties.LinkerMajorVersion;
ntHeader.MinorLinkerVersion = _properties.LinkerMinorVersion;
ntHeader.AddressOfEntryPoint = _properties.RequiresStartupStub ? mappedFieldDataStreamRva - (_is32bit ? 6 : 10) : 0; // TODO: constants
ntHeader.BaseOfCode = textSectionRva;
ntHeader.BaseOfData = _rdataSection.RelativeVirtualAddress;
ntHeader.ImageBase = _properties.BaseAddress;
ntHeader.FileAlignment = _properties.FileAlignment;
ntHeader.MajorSubsystemVersion = _properties.MajorSubsystemVersion;
ntHeader.MinorSubsystemVersion = _properties.MinorSubsystemVersion;
ntHeader.Subsystem = _properties.Subsystem;
ntHeader.DllCharacteristics = _properties.DllCharacteristics;
ntHeader.SizeOfStackReserve = _properties.SizeOfStackReserve;
ntHeader.SizeOfStackCommit = _properties.SizeOfStackCommit;
ntHeader.SizeOfHeapReserve = _properties.SizeOfHeapReserve;
ntHeader.SizeOfHeapCommit = _properties.SizeOfHeapCommit;
ntHeader.SizeOfCode = _textSection.SizeOfRawData;
ntHeader.SizeOfInitializedData = _rdataSection.SizeOfRawData + _coverSection.SizeOfRawData + _sdataSection.SizeOfRawData + _tlsSection.SizeOfRawData + _resourceSection.SizeOfRawData + _relocSection.SizeOfRawData;
ntHeader.SizeOfHeaders = BitArithmeticUtilities.Align(ComputeSizeOfPeHeaders(), _properties.FileAlignment);
ntHeader.SizeOfImage = BitArithmeticUtilities.Align(_relocSection.RelativeVirtualAddress + _relocSection.VirtualSize, 0x2000);
ntHeader.SizeOfUninitializedData = 0;
ntHeader.ImportAddressTable = new DirectoryEntry(
(_properties.RequiresStartupStub) ? textSectionRva : 0,
_sizeOfImportAddressTable);
ntHeader.CliHeaderTable = new DirectoryEntry(
textSectionRva + _sizeOfImportAddressTable,
size: 72); // TODO: constants
if (_properties.RequiresStartupStub)
{
ntHeader.ImportTable = new DirectoryEntry(
textSectionRva + ComputeOffsetToImportTable(metadataSizes),
(_is32bit ? 66 : 70) + 13); // TODO: constants
}
ntHeader.BaseRelocationTable = new DirectoryEntry(
(_properties.RequiresStartupStub) ? _relocSection.RelativeVirtualAddress : 0,
_relocSection.VirtualSize);
if (EmitPdb)
{
// Only the size of the fixed part of the debug table goes here.
ntHeader.DebugTable = new DirectoryEntry(
_textSection.RelativeVirtualAddress + ComputeOffsetToDebugTable(metadataSizes),
ImageDebugDirectoryBaseSize);
}
if (_resourceSection.SizeOfRawData > 0)
{
ntHeader.ResourceTable = new DirectoryEntry(
_resourceSection.RelativeVirtualAddress,
_resourceSection.VirtualSize);
}
if (_tlsSection.SizeOfRawData > 0)
{
ntHeader.ThreadLocalStorageTable = new DirectoryEntry(
_tlsSection.RelativeVirtualAddress,
_tlsSection.SizeOfRawData);
}
}