internal static void WriteModule(StrongNameKeyPair keyPair, byte[] publicKey, ModuleBuilder moduleBuilder,
PEFileKinds fileKind, PortableExecutableKinds portableExecutableKind, ImageFileMachine imageFileMachine,
ResourceSection resources, int entryPointToken, Stream stream)
{
if (stream == null)
{
string fileName = moduleBuilder.FullyQualifiedName;
bool mono = System.Type.GetType("Mono.Runtime") != null;
if (mono)
{
try
{
// Mono mmaps the file, so unlink the previous version since it may be in use
File.Delete(fileName);
}
catch { }
}
using (FileStream fs = new FileStream(fileName, FileMode.Create))
{
WriteModuleImpl(keyPair, publicKey, moduleBuilder, fileKind, portableExecutableKind, imageFileMachine, resources, entryPointToken, fs);
}
// if we're running on Mono, mark the module as executable by using a Mono private API extension
if (mono)
{
File.SetAttributes(fileName, (FileAttributes)(unchecked ((int)0x80000000)));
}
}
else
{
WriteModuleImpl(keyPair, publicKey, moduleBuilder, fileKind, portableExecutableKind, imageFileMachine, resources, entryPointToken, stream);
}
}
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();
int moduleVersionIdIndex = moduleBuilder.Guids.Add(moduleBuilder.GetModuleVersionIdOrEmpty());
moduleBuilder.ModuleTable.Add(0, moduleBuilder.Strings.Add(moduleBuilder.moduleName), moduleVersionIdIndex, 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);
writer.Headers.OptionalHeader.FileAlignment = (uint)moduleBuilder.__FileAlignment;
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 | IMAGE_FILE_HEADER.IMAGE_FILE_LARGE_ADDRESS_AWARE;
writer.Headers.OptionalHeader.SizeOfStackReserve = moduleBuilder.GetStackReserve(0x100000);
writer.Headers.OptionalHeader.SectionAlignment = 0x1000;
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 = (ushort)moduleBuilder.__DllCharacteristics;
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();
var mw = new ModuleBuilderMetadataWriter(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;
}
// Set the PE File timestamp
writer.Headers.FileHeader.TimeDateStamp = moduleBuilder.GetTimeDateStamp();
// we need to start by computing the number of sections, because code.PointerToRawData depends on that
writer.Headers.FileHeader.NumberOfSections = 2;
if (moduleBuilder.initializedData.Length != 0)
{
// .sdata
writer.Headers.FileHeader.NumberOfSections++;
}
if (resources != null)
{
// .rsrc
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);
reloc.VirtualSize = code.PackRelocations();
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
{
writer.Headers.OptionalHeader.AddressOfEntryPoint = code.StartupStubRVA + writer.Thumb;
}
var timeDateStampPosition = 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);
uint guidHeapOffset;
code.Write(mw, sdata.VirtualAddress, out guidHeapOffset);
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);
if (moduleBuilder.symbolWriter != null)
{
moduleBuilder.WriteSymbolTokenMap();
moduleBuilder.symbolWriter.Close();
}
// if we don't have a guid or timestamp, generate one based on the contents of the assembly
if (moduleBuilder.universe.Deterministic &&
(moduleBuilder.GetModuleVersionIdOrEmpty() == Guid.Empty || moduleBuilder.GetTimeDateStamp() == 0 || moduleBuilder.symbolWriter != null))
{
uint timestamp;
Guid guid = GenerateModuleVersionIdAndPseudoTimestamp(stream, out timestamp);
if (moduleBuilder.GetModuleVersionIdOrEmpty() == Guid.Empty)
{
// patch the MVID in the GUID stream
stream.Position = guidHeapOffset + (moduleVersionIdIndex - 1) * 16;
stream.Write(guid.ToByteArray(), 0, 16);
moduleBuilder.__SetModuleVersionId(guid);
}
if (moduleBuilder.GetTimeDateStamp() == 0)
{
// patch the TimeDateStamp in IMAGE_FILE_HEADER
stream.Position = timeDateStampPosition;
stream.Write(BitConverter.GetBytes(timestamp), 0, 4);
moduleBuilder.SetTimeDateStamp(timestamp);
}
if (moduleBuilder.symbolWriter != null)
{
stream.Position = code.DebugDirectoryRVA - code.BaseRVA + code.PointerToRawData;
code.PatchDebugDirectory(mw);
}
}
// do the strong naming
if (keyPair != null)
{
StrongName(stream, keyPair, writer.HeaderSize, text.PointerToRawData, code.StrongNameSignatureRVA - text.VirtualAddress + text.PointerToRawData, code.StrongNameSignatureLength);
}
}
internal static void WriteModule(StrongNameKeyPair keyPair, byte[] publicKey, ModuleBuilder moduleBuilder,
PEFileKinds fileKind, PortableExecutableKinds portableExecutableKind, ImageFileMachine imageFileMachine,
ResourceSection resources, int entryPointToken)
{
WriteModule(keyPair, publicKey, moduleBuilder, fileKind, portableExecutableKind, imageFileMachine, resources, entryPointToken, null);
}