internal TextSection(PEWriter peWriter, CliHeader cliHeader, ModuleBuilder moduleBuilder, int strongNameSignatureLength)
{
this.peWriter = peWriter;
this.cliHeader = cliHeader;
this.moduleBuilder = moduleBuilder;
this.strongNameSignatureLength = (uint)strongNameSignatureLength;
}
internal TextSection(PEWriter peWriter, CliHeader cliHeader, ModuleBuilder moduleBuilder, bool strongName)
{
this.peWriter = peWriter;
this.cliHeader = cliHeader;
this.moduleBuilder = moduleBuilder;
this.strongName = strongName;
}
internal TextSection(PEWriter peWriter, CliHeader cliHeader, ModuleBuilder moduleBuilder, int strongNameSignatureLength)
{
this.peWriter = peWriter;
this.cliHeader = cliHeader;
this.moduleBuilder = moduleBuilder;
this.strongNameSignatureLength = (uint)strongNameSignatureLength;
if (moduleBuilder.unmanagedExports.Count != 0)
{
this.exportTables = new ExportTables(this);
}
}
private static void WriteModuleImpl(StrongNameKeyPair keyPair, byte[] publicKey, ModuleBuilder moduleBuilder,
PEFileKinds fileKind, PortableExecutableKinds portableExecutableKind, ImageFileMachine imageFileMachine,
ResourceSection resources, int entryPointToken, Stream stream)
{
moduleBuilder.ApplyUnmanagedExports(imageFileMachine);
moduleBuilder.FixupMethodBodyTokens();
moduleBuilder.ModuleTable.Add(0, moduleBuilder.Strings.Add(moduleBuilder.moduleName), moduleBuilder.Guids.Add(moduleBuilder.ModuleVersionId), 0, 0);
if (moduleBuilder.UserStrings.IsEmpty)
{
// for compat with Ref.Emit, if there aren't any user strings, we add one
moduleBuilder.UserStrings.Add(" ");
}
if (resources != null)
{
resources.Finish();
}
PEWriter writer = new PEWriter(stream);
switch (imageFileMachine)
{
case ImageFileMachine.I386:
writer.Headers.FileHeader.Machine = IMAGE_FILE_HEADER.IMAGE_FILE_MACHINE_I386;
writer.Headers.FileHeader.Characteristics |= IMAGE_FILE_HEADER.IMAGE_FILE_32BIT_MACHINE;
writer.Headers.OptionalHeader.SizeOfStackReserve = moduleBuilder.GetStackReserve(0x100000);
break;
case ImageFileMachine.ARM:
writer.Headers.FileHeader.Machine = IMAGE_FILE_HEADER.IMAGE_FILE_MACHINE_ARM;
writer.Headers.FileHeader.Characteristics |= IMAGE_FILE_HEADER.IMAGE_FILE_32BIT_MACHINE;
writer.Headers.OptionalHeader.SizeOfStackReserve = moduleBuilder.GetStackReserve(0x100000);
break;
case ImageFileMachine.AMD64:
writer.Headers.FileHeader.Machine = IMAGE_FILE_HEADER.IMAGE_FILE_MACHINE_AMD64;
writer.Headers.FileHeader.Characteristics |= IMAGE_FILE_HEADER.IMAGE_FILE_LARGE_ADDRESS_AWARE;
writer.Headers.FileHeader.SizeOfOptionalHeader = 0xF0;
writer.Headers.OptionalHeader.Magic = IMAGE_OPTIONAL_HEADER.IMAGE_NT_OPTIONAL_HDR64_MAGIC;
writer.Headers.OptionalHeader.SizeOfStackReserve = moduleBuilder.GetStackReserve(0x400000);
writer.Headers.OptionalHeader.SizeOfStackCommit = 0x4000;
writer.Headers.OptionalHeader.SizeOfHeapCommit = 0x2000;
break;
case ImageFileMachine.IA64:
writer.Headers.FileHeader.Machine = IMAGE_FILE_HEADER.IMAGE_FILE_MACHINE_IA64;
writer.Headers.FileHeader.Characteristics |= IMAGE_FILE_HEADER.IMAGE_FILE_LARGE_ADDRESS_AWARE;
writer.Headers.FileHeader.SizeOfOptionalHeader = 0xF0;
writer.Headers.OptionalHeader.Magic = IMAGE_OPTIONAL_HEADER.IMAGE_NT_OPTIONAL_HDR64_MAGIC;
writer.Headers.OptionalHeader.SizeOfStackReserve = moduleBuilder.GetStackReserve(0x400000);
writer.Headers.OptionalHeader.SizeOfStackCommit = 0x4000;
writer.Headers.OptionalHeader.SizeOfHeapCommit = 0x2000;
break;
default:
throw new ArgumentOutOfRangeException("imageFileMachine");
}
if (fileKind == PEFileKinds.Dll)
{
writer.Headers.FileHeader.Characteristics |= IMAGE_FILE_HEADER.IMAGE_FILE_DLL;
}
switch (fileKind)
{
case PEFileKinds.WindowApplication:
writer.Headers.OptionalHeader.Subsystem = IMAGE_OPTIONAL_HEADER.IMAGE_SUBSYSTEM_WINDOWS_GUI;
break;
default:
writer.Headers.OptionalHeader.Subsystem = IMAGE_OPTIONAL_HEADER.IMAGE_SUBSYSTEM_WINDOWS_CUI;
break;
}
writer.Headers.OptionalHeader.DllCharacteristics =
IMAGE_OPTIONAL_HEADER.IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE |
IMAGE_OPTIONAL_HEADER.IMAGE_DLLCHARACTERISTICS_NO_SEH |
IMAGE_OPTIONAL_HEADER.IMAGE_DLLCHARACTERISTICS_NX_COMPAT |
IMAGE_OPTIONAL_HEADER.IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE;
CliHeader cliHeader = new CliHeader();
cliHeader.Cb = 0x48;
cliHeader.MajorRuntimeVersion = 2;
cliHeader.MinorRuntimeVersion = moduleBuilder.MDStreamVersion < 0x20000 ? (ushort)0 : (ushort)5;
if ((portableExecutableKind & PortableExecutableKinds.ILOnly) != 0)
{
cliHeader.Flags |= CliHeader.COMIMAGE_FLAGS_ILONLY;
}
if ((portableExecutableKind & PortableExecutableKinds.Required32Bit) != 0)
{
cliHeader.Flags |= CliHeader.COMIMAGE_FLAGS_32BITREQUIRED;
}
if ((portableExecutableKind & PortableExecutableKinds.Preferred32Bit) != 0)
{
cliHeader.Flags |= CliHeader.COMIMAGE_FLAGS_32BITREQUIRED | CliHeader.COMIMAGE_FLAGS_32BITPREFERRED;
}
if (keyPair != null)
{
cliHeader.Flags |= CliHeader.COMIMAGE_FLAGS_STRONGNAMESIGNED;
}
if (moduleBuilder.IsPseudoToken(entryPointToken))
{
entryPointToken = moduleBuilder.ResolvePseudoToken(entryPointToken);
}
cliHeader.EntryPointToken = (uint)entryPointToken;
moduleBuilder.Strings.Freeze();
moduleBuilder.UserStrings.Freeze();
moduleBuilder.Guids.Freeze();
moduleBuilder.Blobs.Freeze();
MetadataWriter mw = new MetadataWriter(moduleBuilder, stream);
moduleBuilder.Tables.Freeze(mw);
TextSection code = new TextSection(writer, cliHeader, moduleBuilder, ComputeStrongNameSignatureLength(publicKey));
// Export Directory
if (code.ExportDirectoryLength != 0)
{
writer.Headers.OptionalHeader.DataDirectory[0].VirtualAddress = code.ExportDirectoryRVA;
writer.Headers.OptionalHeader.DataDirectory[0].Size = code.ExportDirectoryLength;
}
// Import Directory
if (code.ImportDirectoryLength != 0)
{
writer.Headers.OptionalHeader.DataDirectory[1].VirtualAddress = code.ImportDirectoryRVA;
writer.Headers.OptionalHeader.DataDirectory[1].Size = code.ImportDirectoryLength;
}
// Import Address Table Directory
if (code.ImportAddressTableLength != 0)
{
writer.Headers.OptionalHeader.DataDirectory[12].VirtualAddress = code.ImportAddressTableRVA;
writer.Headers.OptionalHeader.DataDirectory[12].Size = code.ImportAddressTableLength;
}
// COM Descriptor Directory
writer.Headers.OptionalHeader.DataDirectory[14].VirtualAddress = code.ComDescriptorRVA;
writer.Headers.OptionalHeader.DataDirectory[14].Size = code.ComDescriptorLength;
// Debug Directory
if (code.DebugDirectoryLength != 0)
{
writer.Headers.OptionalHeader.DataDirectory[6].VirtualAddress = code.DebugDirectoryRVA;
writer.Headers.OptionalHeader.DataDirectory[6].Size = code.DebugDirectoryLength;
}
// we need to start by computing the number of sections, because code.PointerToRawData depends on that
writer.Headers.FileHeader.NumberOfSections = 1;
if (moduleBuilder.initializedData.Length != 0)
{
// .sdata
writer.Headers.FileHeader.NumberOfSections++;
}
if (resources != null)
{
// .rsrc
writer.Headers.FileHeader.NumberOfSections++;
}
if (imageFileMachine != ImageFileMachine.ARM)
{
// .reloc
writer.Headers.FileHeader.NumberOfSections++;
}
SectionHeader text = new SectionHeader();
text.Name = ".text";
text.VirtualAddress = code.BaseRVA;
text.VirtualSize = (uint)code.Length;
text.PointerToRawData = code.PointerToRawData;
text.SizeOfRawData = writer.ToFileAlignment((uint)code.Length);
text.Characteristics = SectionHeader.IMAGE_SCN_CNT_CODE | SectionHeader.IMAGE_SCN_MEM_EXECUTE | SectionHeader.IMAGE_SCN_MEM_READ;
SectionHeader sdata = new SectionHeader();
sdata.Name = ".sdata";
sdata.VirtualAddress = text.VirtualAddress + writer.ToSectionAlignment(text.VirtualSize);
sdata.VirtualSize = (uint)moduleBuilder.initializedData.Length;
sdata.PointerToRawData = text.PointerToRawData + text.SizeOfRawData;
sdata.SizeOfRawData = writer.ToFileAlignment((uint)moduleBuilder.initializedData.Length);
sdata.Characteristics = SectionHeader.IMAGE_SCN_CNT_INITIALIZED_DATA | SectionHeader.IMAGE_SCN_MEM_READ | SectionHeader.IMAGE_SCN_MEM_WRITE;
SectionHeader rsrc = new SectionHeader();
rsrc.Name = ".rsrc";
rsrc.VirtualAddress = sdata.VirtualAddress + writer.ToSectionAlignment(sdata.VirtualSize);
rsrc.PointerToRawData = sdata.PointerToRawData + sdata.SizeOfRawData;
rsrc.VirtualSize = resources == null ? 0 : (uint)resources.Length;
rsrc.SizeOfRawData = writer.ToFileAlignment(rsrc.VirtualSize);
rsrc.Characteristics = SectionHeader.IMAGE_SCN_MEM_READ | SectionHeader.IMAGE_SCN_CNT_INITIALIZED_DATA;
if (rsrc.SizeOfRawData != 0)
{
// Resource Directory
writer.Headers.OptionalHeader.DataDirectory[2].VirtualAddress = rsrc.VirtualAddress;
writer.Headers.OptionalHeader.DataDirectory[2].Size = rsrc.VirtualSize;
}
SectionHeader reloc = new SectionHeader();
reloc.Name = ".reloc";
reloc.VirtualAddress = rsrc.VirtualAddress + writer.ToSectionAlignment(rsrc.VirtualSize);
if (imageFileMachine != ImageFileMachine.ARM)
{
reloc.VirtualSize = ((uint)moduleBuilder.unmanagedExports.Count + 1) * 12;
}
reloc.PointerToRawData = rsrc.PointerToRawData + rsrc.SizeOfRawData;
reloc.SizeOfRawData = writer.ToFileAlignment(reloc.VirtualSize);
reloc.Characteristics = SectionHeader.IMAGE_SCN_MEM_READ | SectionHeader.IMAGE_SCN_CNT_INITIALIZED_DATA | SectionHeader.IMAGE_SCN_MEM_DISCARDABLE;
if (reloc.SizeOfRawData != 0)
{
// Base Relocation Directory
writer.Headers.OptionalHeader.DataDirectory[5].VirtualAddress = reloc.VirtualAddress;
writer.Headers.OptionalHeader.DataDirectory[5].Size = reloc.VirtualSize;
}
writer.Headers.OptionalHeader.SizeOfCode = text.SizeOfRawData;
writer.Headers.OptionalHeader.SizeOfInitializedData = sdata.SizeOfRawData + rsrc.SizeOfRawData + reloc.SizeOfRawData;
writer.Headers.OptionalHeader.SizeOfUninitializedData = 0;
writer.Headers.OptionalHeader.SizeOfImage = reloc.VirtualAddress + writer.ToSectionAlignment(reloc.VirtualSize);
writer.Headers.OptionalHeader.SizeOfHeaders = text.PointerToRawData;
writer.Headers.OptionalHeader.BaseOfCode = code.BaseRVA;
writer.Headers.OptionalHeader.BaseOfData = sdata.VirtualAddress;
writer.Headers.OptionalHeader.ImageBase = (ulong)moduleBuilder.__ImageBase;
if (imageFileMachine == ImageFileMachine.IA64)
{
// apparently for IA64 AddressOfEntryPoint points to the address of the entry point
// (i.e. there is an additional layer of indirection), so we add the offset to the pointer
writer.Headers.OptionalHeader.AddressOfEntryPoint = code.StartupStubRVA + 0x20;
}
else if (imageFileMachine != ImageFileMachine.ARM)
{
writer.Headers.OptionalHeader.AddressOfEntryPoint = code.StartupStubRVA;
}
writer.WritePEHeaders();
writer.WriteSectionHeader(text);
if (sdata.SizeOfRawData != 0)
{
writer.WriteSectionHeader(sdata);
}
if (rsrc.SizeOfRawData != 0)
{
writer.WriteSectionHeader(rsrc);
}
if (reloc.SizeOfRawData != 0)
{
writer.WriteSectionHeader(reloc);
}
stream.Seek(text.PointerToRawData, SeekOrigin.Begin);
code.Write(mw, sdata.VirtualAddress);
if (sdata.SizeOfRawData != 0)
{
stream.Seek(sdata.PointerToRawData, SeekOrigin.Begin);
mw.Write(moduleBuilder.initializedData);
}
if (rsrc.SizeOfRawData != 0)
{
stream.Seek(rsrc.PointerToRawData, SeekOrigin.Begin);
resources.Write(mw, rsrc.VirtualAddress);
}
if (reloc.SizeOfRawData != 0)
{
stream.Seek(reloc.PointerToRawData, SeekOrigin.Begin);
code.WriteRelocations(mw);
}
// file alignment
stream.SetLength(reloc.PointerToRawData + reloc.SizeOfRawData);
// do the strong naming
if (keyPair != null)
{
StrongName(stream, keyPair, writer.HeaderSize, text.PointerToRawData, code.StrongNameSignatureRVA - text.VirtualAddress + text.PointerToRawData, code.StrongNameSignatureLength);
}
if (moduleBuilder.symbolWriter != null)
{
moduleBuilder.WriteSymbolTokenMap();
moduleBuilder.symbolWriter.Close();
}
}
/// <summary>
/// Reads the root structure from the metadata.
/// </summary>
/// <param name="header">The <see cref="CliHeader"/> which denotes the location of the information.</param>
/// <param name="originalStream">The <see cref="FileStream"/> being read from.</param>
/// <param name="reader">The <see cref="EndianAwareBinaryReader"/> which handles reads.</param>
/// <param name="relativeVirtualAddress">The <see cref="UInt32"/> value which denotes the relative
/// virtual address of the metadata header.</param>
/// <param name="sourceImage"></param>
internal void Read(CliHeader header, FileStream originalStream, EndianAwareBinaryReader reader, uint relativeVirtualAddress, PEImage sourceImage)
{
this.originalStream = originalStream;
this.header = header;
this.streamPosition = relativeVirtualAddress;
this.signature = reader.ReadUInt32();
if (this.signature != metadataSignature)
{
throw new BadImageFormatException();
}
this.depreciatedVersion.Read(reader);
this.reserved = reader.ReadUInt32();
this.realVersionLength = reader.ReadInt32();
byte[] version = new byte[(this.realVersionLength + 3) & ~3];//Make it a multiple of four.
reader.Read(version, 0, version.Length);
this.version = version;
this.reservedFlags = reader.ReadUInt16();
int streamCount = 0;
streamCount = reader.ReadUInt16();
this.sourceImage = sourceImage;
for (int i = 0; i < streamCount; i++)
{
var currentHeader = new CliMetadataStreamHeader();
currentHeader.Read(reader, sourceImage);
switch (currentHeader.Name)
{
case "#Strings":
if (this.strings != null)
{
goto sectionExists;
}
this.strings = new CliMetadataStringsHeaderAndHeap(currentHeader, sourceImage.SyncObject);
this.ScanAndReadSection(sourceImage, strings, this.strings.Read);
break;
case "#Blob":
if (this.blob != null)
{
goto sectionExists;
}
this.blob = new CliMetadataBlobHeaderAndHeap(currentHeader, this);
this.ScanAndReadSection(sourceImage, blob, this.blob.Read);
break;
case "#US":
if (this.userStrings != null)
{
goto sectionExists;
}
this.userStrings = new CliMetadataUserStringsHeaderAndHeap(currentHeader, sourceImage.SyncObject);
this.ScanAndReadSection(sourceImage, this.userStrings, this.userStrings.Read);
break;
case "#GUID":
if (this.guids != null)
{
goto sectionExists;
}
this.guids = new CliMetadataGuidHeaderAndHeap(currentHeader, sourceImage.SyncObject);
this.ScanAndReadSection(sourceImage, guids, this.guids.Read);
break;
case "#-": //https://github.com/jbevain/cecil/blob/8b689ecdc890cbf3715ba8775de1d713d71f09f3/Mono.Cecil.PE/ImageReader.cs#L359
case "#~":
if (this.tableStream != null)
{
goto sectionExists;
}
this.tableStream = new CliMetadataTableStreamAndHeader(currentHeader);
this.ScanAndReadSection(sourceImage, tableStream, sdReader => this.tableStream.Read(sdReader, this));
break;
}
continue;
sectionExists:
throw new BadImageFormatException(string.Format("Duplicate {0} section encountered.", currentHeader.Name));
}
if (this.tableStream == null)
{
throw new BadImageFormatException("#~ or #- stream not present in image.");
}
}
internal static void WriteModule(StrongNameKeyPair keyPair, byte[] publicKey, ModuleBuilder moduleBuilder, PEFileKinds fileKind, PortableExecutableKinds portableExecutableKind, ImageFileMachine imageFileMachine, ByteBuffer versionInfoData, byte[] unmanagedResources, int entryPointToken)
{
moduleBuilder.FixupMethodBodyTokens();
moduleBuilder.ModuleTable.Add(0, moduleBuilder.Strings.Add(moduleBuilder.moduleName), moduleBuilder.Guids.Add(moduleBuilder.ModuleVersionId), 0, 0);
if (moduleBuilder.UserStrings.IsEmpty)
{
// for compat with Ref.Emit, if there aren't any user strings, we add one
moduleBuilder.UserStrings.Add(" ");
}
using (FileStream fs = new FileStream(moduleBuilder.FullyQualifiedName, FileMode.Create))
{
PEWriter writer = new PEWriter(fs);
switch (imageFileMachine)
{
case ImageFileMachine.I386:
writer.Headers.FileHeader.Machine = IMAGE_FILE_HEADER.IMAGE_FILE_MACHINE_I386;
writer.Headers.FileHeader.Characteristics |= IMAGE_FILE_HEADER.IMAGE_FILE_32BIT_MACHINE;
break;
case ImageFileMachine.AMD64:
writer.Headers.FileHeader.Machine = IMAGE_FILE_HEADER.IMAGE_FILE_MACHINE_AMD64;
writer.Headers.FileHeader.Characteristics |= IMAGE_FILE_HEADER.IMAGE_FILE_LARGE_ADDRESS_AWARE;
writer.Headers.FileHeader.SizeOfOptionalHeader = 0xF0;
writer.Headers.OptionalHeader.Magic = IMAGE_OPTIONAL_HEADER.IMAGE_NT_OPTIONAL_HDR64_MAGIC;
writer.Headers.OptionalHeader.SizeOfStackReserve = 0x400000;
writer.Headers.OptionalHeader.SizeOfStackCommit = 0x4000;
writer.Headers.OptionalHeader.SizeOfHeapCommit = 0x2000;
break;
case ImageFileMachine.IA64:
writer.Headers.FileHeader.Machine = IMAGE_FILE_HEADER.IMAGE_FILE_MACHINE_IA64;
writer.Headers.FileHeader.Characteristics |= IMAGE_FILE_HEADER.IMAGE_FILE_LARGE_ADDRESS_AWARE;
writer.Headers.FileHeader.SizeOfOptionalHeader = 0xF0;
writer.Headers.OptionalHeader.Magic = IMAGE_OPTIONAL_HEADER.IMAGE_NT_OPTIONAL_HDR64_MAGIC;
writer.Headers.OptionalHeader.SizeOfStackReserve = 0x400000;
writer.Headers.OptionalHeader.SizeOfStackCommit = 0x4000;
writer.Headers.OptionalHeader.SizeOfHeapCommit = 0x2000;
break;
default:
throw new ArgumentOutOfRangeException("imageFileMachine");
}
if (fileKind == PEFileKinds.Dll)
{
writer.Headers.FileHeader.Characteristics |= IMAGE_FILE_HEADER.IMAGE_FILE_DLL;
}
switch (fileKind)
{
case PEFileKinds.WindowApplication:
writer.Headers.OptionalHeader.Subsystem = IMAGE_OPTIONAL_HEADER.IMAGE_SUBSYSTEM_WINDOWS_GUI;
break;
default:
writer.Headers.OptionalHeader.Subsystem = IMAGE_OPTIONAL_HEADER.IMAGE_SUBSYSTEM_WINDOWS_CUI;
break;
}
writer.Headers.OptionalHeader.DllCharacteristics =
IMAGE_OPTIONAL_HEADER.IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE |
IMAGE_OPTIONAL_HEADER.IMAGE_DLLCHARACTERISTICS_NO_SEH |
IMAGE_OPTIONAL_HEADER.IMAGE_DLLCHARACTERISTICS_NX_COMPAT |
IMAGE_OPTIONAL_HEADER.IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE;
CliHeader cliHeader = new CliHeader();
cliHeader.Cb = 0x48;
cliHeader.MajorRuntimeVersion = 2;
cliHeader.MinorRuntimeVersion = moduleBuilder.MDStreamVersion < 0x20000 ? (ushort)0 : (ushort)5;
if ((portableExecutableKind & PortableExecutableKinds.ILOnly) != 0)
{
cliHeader.Flags |= CliHeader.COMIMAGE_FLAGS_ILONLY;
}
if ((portableExecutableKind & PortableExecutableKinds.Required32Bit) != 0)
{
cliHeader.Flags |= CliHeader.COMIMAGE_FLAGS_32BITREQUIRED;
}
if (keyPair != null)
{
cliHeader.Flags |= CliHeader.COMIMAGE_FLAGS_STRONGNAMESIGNED;
}
if (moduleBuilder.IsPseudoToken(entryPointToken))
{
entryPointToken = moduleBuilder.ResolvePseudoToken(entryPointToken);
}
cliHeader.EntryPointToken = (uint)entryPointToken;
moduleBuilder.Strings.Freeze();
moduleBuilder.UserStrings.Freeze();
moduleBuilder.Guids.Freeze();
moduleBuilder.Blobs.Freeze();
MetadataWriter mw = new MetadataWriter(moduleBuilder, fs);
moduleBuilder.Tables.Freeze(mw);
TextSection code = new TextSection(writer, cliHeader, moduleBuilder, publicKey != null);
ResourceSection resources = new ResourceSection(versionInfoData, unmanagedResources);
// Import Directory
writer.Headers.OptionalHeader.DataDirectory[1].VirtualAddress = code.ImportDirectoryRVA;
writer.Headers.OptionalHeader.DataDirectory[1].Size = code.ImportDirectoryLength;
// Import Address Table Directory
writer.Headers.OptionalHeader.DataDirectory[12].VirtualAddress = code.ImportAddressTableRVA;
writer.Headers.OptionalHeader.DataDirectory[12].Size = code.ImportAddressTableLength;
// COM Descriptor Directory
writer.Headers.OptionalHeader.DataDirectory[14].VirtualAddress = code.ComDescriptorRVA;
writer.Headers.OptionalHeader.DataDirectory[14].Size = code.ComDescriptorLength;
// Debug Directory
if (code.DebugDirectoryLength != 0)
{
writer.Headers.OptionalHeader.DataDirectory[6].VirtualAddress = code.DebugDirectoryRVA;
writer.Headers.OptionalHeader.DataDirectory[6].Size = code.DebugDirectoryLength;
}
writer.Headers.FileHeader.NumberOfSections = 2;
if (moduleBuilder.initializedData.Length != 0)
{
writer.Headers.FileHeader.NumberOfSections++;
}
if (resources.Length != 0)
{
writer.Headers.FileHeader.NumberOfSections++;
}
SectionHeader text = new SectionHeader();
text.Name = ".text";
text.VirtualAddress = code.BaseRVA;
text.VirtualSize = (uint)code.Length;
text.PointerToRawData = code.PointerToRawData;
text.SizeOfRawData = writer.ToFileAlignment((uint)code.Length);
text.Characteristics = SectionHeader.IMAGE_SCN_CNT_CODE | SectionHeader.IMAGE_SCN_MEM_EXECUTE | SectionHeader.IMAGE_SCN_MEM_READ;
SectionHeader sdata = new SectionHeader();
sdata.Name = ".sdata";
sdata.VirtualAddress = text.VirtualAddress + writer.ToSectionAlignment(text.VirtualSize);
sdata.VirtualSize = (uint)moduleBuilder.initializedData.Length;
sdata.PointerToRawData = text.PointerToRawData + text.SizeOfRawData;
sdata.SizeOfRawData = writer.ToFileAlignment((uint)moduleBuilder.initializedData.Length);
sdata.Characteristics = SectionHeader.IMAGE_SCN_CNT_INITIALIZED_DATA | SectionHeader.IMAGE_SCN_MEM_READ | SectionHeader.IMAGE_SCN_MEM_WRITE;
SectionHeader rsrc = new SectionHeader();
rsrc.Name = ".rsrc";
rsrc.VirtualAddress = sdata.VirtualAddress + writer.ToSectionAlignment(sdata.VirtualSize);
rsrc.PointerToRawData = sdata.PointerToRawData + sdata.SizeOfRawData;
rsrc.VirtualSize = (uint)resources.Length;
rsrc.SizeOfRawData = writer.ToFileAlignment(rsrc.VirtualSize);
rsrc.Characteristics = SectionHeader.IMAGE_SCN_MEM_READ | SectionHeader.IMAGE_SCN_CNT_INITIALIZED_DATA;
if (rsrc.SizeOfRawData != 0)
{
// Resource Directory
writer.Headers.OptionalHeader.DataDirectory[2].VirtualAddress = rsrc.VirtualAddress;
writer.Headers.OptionalHeader.DataDirectory[2].Size = rsrc.VirtualSize;
}
SectionHeader reloc = new SectionHeader();
reloc.Name = ".reloc";
reloc.VirtualAddress = rsrc.VirtualAddress + writer.ToSectionAlignment(rsrc.VirtualSize);
reloc.VirtualSize = 12;
reloc.PointerToRawData = rsrc.PointerToRawData + rsrc.SizeOfRawData;
reloc.SizeOfRawData = writer.ToFileAlignment(reloc.VirtualSize);
reloc.Characteristics = SectionHeader.IMAGE_SCN_MEM_READ | SectionHeader.IMAGE_SCN_CNT_INITIALIZED_DATA | SectionHeader.IMAGE_SCN_MEM_DISCARDABLE;
// Base Relocation Directory
writer.Headers.OptionalHeader.DataDirectory[5].VirtualAddress = reloc.VirtualAddress;
writer.Headers.OptionalHeader.DataDirectory[5].Size = reloc.VirtualSize;
writer.Headers.OptionalHeader.SizeOfCode = text.SizeOfRawData;
writer.Headers.OptionalHeader.SizeOfInitializedData = sdata.SizeOfRawData + rsrc.SizeOfRawData + reloc.SizeOfRawData;
writer.Headers.OptionalHeader.SizeOfUninitializedData = 0;
writer.Headers.OptionalHeader.SizeOfImage = reloc.VirtualAddress + writer.ToSectionAlignment(reloc.VirtualSize);
writer.Headers.OptionalHeader.SizeOfHeaders = text.PointerToRawData;
writer.Headers.OptionalHeader.BaseOfCode = code.BaseRVA;
writer.Headers.OptionalHeader.BaseOfData = sdata.VirtualAddress;
writer.Headers.OptionalHeader.ImageBase = (ulong)moduleBuilder.__ImageBase;
if (imageFileMachine == ImageFileMachine.IA64)
{
// apparently for IA64 AddressOfEntryPoint points to the address of the entry point
// (i.e. there is an additional layer of indirection), so we add the offset to the pointer
writer.Headers.OptionalHeader.AddressOfEntryPoint = code.StartupStubRVA + 0x20;
}
else
{
writer.Headers.OptionalHeader.AddressOfEntryPoint = code.StartupStubRVA;
}
writer.WritePEHeaders();
writer.WriteSectionHeader(text);
if (sdata.SizeOfRawData != 0)
{
writer.WriteSectionHeader(sdata);
}
if (rsrc.SizeOfRawData != 0)
{
writer.WriteSectionHeader(rsrc);
}
writer.WriteSectionHeader(reloc);
fs.Seek(text.PointerToRawData, SeekOrigin.Begin);
code.Write(mw, (int)sdata.VirtualAddress);
fs.Seek(sdata.PointerToRawData, SeekOrigin.Begin);
mw.Write(moduleBuilder.initializedData);
if (rsrc.SizeOfRawData != 0)
{
fs.Seek(rsrc.PointerToRawData, SeekOrigin.Begin);
resources.Write(mw, rsrc.VirtualAddress);
}
fs.Seek(reloc.PointerToRawData, SeekOrigin.Begin);
// .reloc section
uint relocAddress = code.StartupStubRVA;
switch (imageFileMachine)
{
case ImageFileMachine.I386:
case ImageFileMachine.AMD64:
relocAddress += 2;
break;
case ImageFileMachine.IA64:
relocAddress += 0x20;
break;
}
uint pageRVA = relocAddress & ~0xFFFU;
mw.Write(pageRVA); // PageRVA
mw.Write(0x000C); // Block Size
if (imageFileMachine == ImageFileMachine.I386)
{
mw.Write(0x3000 + relocAddress - pageRVA); // Type / Offset
}
else if (imageFileMachine == ImageFileMachine.AMD64)
{
mw.Write(0xA000 + relocAddress - pageRVA); // Type / Offset
}
else if (imageFileMachine == ImageFileMachine.IA64)
{
// on IA64 the StartupStubRVA is 16 byte aligned, so these two addresses won't cross a page boundary
mw.Write((short)(0xA000 + relocAddress - pageRVA)); // Type / Offset
mw.Write((short)(0xA000 + relocAddress - pageRVA + 8)); // Type / Offset
}
// file alignment
mw.Write(new byte[writer.Headers.OptionalHeader.FileAlignment - reloc.VirtualSize]);
// do the strong naming
if (keyPair != null)
{
StrongName(fs, keyPair, writer.HeaderSize, text.PointerToRawData, code.StrongNameSignatureRVA - text.VirtualAddress + text.PointerToRawData, code.StrongNameSignatureLength);
}
}
if (moduleBuilder.symbolWriter != null)
{
moduleBuilder.WriteSymbolTokenMap();
moduleBuilder.symbolWriter.Close();
}
}
