public R2RImportSection(int index, byte[] image, int rva, int size, CorCompileImportFlags flags, byte type, byte entrySize, int signatureRVA, List <ImportSectionEntry> entries, int auxDataRVA, int auxDataOffset, Machine machine, ushort majorVersion)
{
Index = index;
SectionRVA = rva;
SectionSize = size;
Flags = flags;
Type = (CorCompileImportType)type;
EntrySize = entrySize;
SignatureRVA = signatureRVA;
Entries = entries;
AuxiliaryDataRVA = auxDataRVA;
AuxiliaryData = null;
if (AuxiliaryDataRVA != 0)
{
if (machine == Machine.Amd64)
{
AuxiliaryData = new Amd64.GcInfo(image, auxDataOffset, machine, majorVersion);
}
else if (machine == Machine.I386)
{
AuxiliaryData = new x86.GcInfo(image, auxDataOffset, machine, majorVersion);
}
}
}
public R2RImportSection(
int index,
R2RReader reader,
int rva,
int size,
CorCompileImportFlags flags,
byte type,
byte entrySize,
int signatureRVA,
List <ImportSectionEntry> entries,
int auxDataRVA,
int auxDataOffset,
Machine machine,
ushort majorVersion)
{
Index = index;
SectionRVA = rva;
SectionSize = size;
Flags = flags;
Type = (CorCompileImportType)type;
EntrySize = entrySize;
SignatureRVA = signatureRVA;
Entries = entries;
AuxiliaryDataRVA = auxDataRVA;
AuxiliaryDataSize = 0;
if (AuxiliaryDataRVA != 0)
{
int endOffset = auxDataOffset + BitConverter.ToInt32(reader.Image, auxDataOffset);
for (int i = 0; i < Entries.Count; i++)
{
int entryStartOffset = auxDataOffset + BitConverter.ToInt32(reader.Image, auxDataOffset + sizeof(int) * (Entries[i].Index / GCRefMap.GCREFMAP_LOOKUP_STRIDE));
int remaining = Entries[i].Index % GCRefMap.GCREFMAP_LOOKUP_STRIDE;
while (remaining != 0)
{
while ((reader.Image[entryStartOffset] & 0x80) != 0)
{
entryStartOffset++;
}
entryStartOffset++;
remaining--;
}
GCRefMapDecoder decoder = new GCRefMapDecoder(reader, entryStartOffset);
Entries[i].GCRefMap = decoder.ReadMap();
endOffset = decoder.GetOffset();
}
AuxiliaryDataSize = endOffset - auxDataOffset;
}
}
public ImportSectionNode(string name, CorCompileImportType importType, CorCompileImportFlags flags, byte entrySize, bool emitPrecode)
{
_name = name;
_type = importType;
_flags = flags;
_entrySize = entrySize;
_emitPrecode = emitPrecode;
_imports = new ArrayOfEmbeddedDataNode <Import>(_name + "_ImportBegin", _name + "_ImportEnd", null);
_signatures = new ArrayOfEmbeddedPointersNode <Signature>(_name + "_SigBegin", _name + "_SigEnd", null);
}
public ImportSectionNode(string name, CorCompileImportType importType, CorCompileImportFlags flags, byte entrySize, bool emitPrecode, bool emitGCRefMap)
{
_name = name;
_type = importType;
_flags = flags;
_entrySize = entrySize;
_emitPrecode = emitPrecode;
_emitGCRefMap = emitGCRefMap;
_imports = new ImportTable(_name + "_ImportBegin", _name + "_ImportEnd");
_signatures = new ArrayOfEmbeddedPointersNode <Signature>(_name + "_SigBegin", _name + "_SigEnd", new EmbeddedObjectNodeComparer(new CompilerComparer()));
_signatureList = new List <Signature>();
_gcRefMap = _emitGCRefMap ? new GCRefMapNode(this) : null;
}
public R2RImportSection(
int index,
R2RReader reader,
int rva,
int size,
CorCompileImportFlags flags,
byte type,
byte entrySize,
int signatureRVA,
List <ImportSectionEntry> entries,
int auxDataRVA,
int auxDataOffset,
Machine machine,
ushort majorVersion)
{
Index = index;
SectionRVA = rva;
SectionSize = size;
Flags = flags;
Type = (CorCompileImportType)type;
EntrySize = entrySize;
SignatureRVA = signatureRVA;
Entries = entries;
AuxiliaryDataRVA = auxDataRVA;
AuxiliaryDataSize = 0;
if (AuxiliaryDataRVA != 0)
{
int startOffset = auxDataOffset + BitConverter.ToInt32(reader.Image, auxDataOffset);
for (int i = 0; i < Entries.Count; i++)
{
GCRefMapDecoder decoder = new GCRefMapDecoder(reader, startOffset);
Entries[i].GCRefMap = decoder.ReadMap();
startOffset = decoder.GetOffset();
}
AuxiliaryDataSize = startOffset - auxDataOffset;
}
}
/// <summary>
/// based on <a href="https://github.com/dotnet/coreclr/blob/master/src/zap/zapimport.cpp">ZapImportSectionsTable::Save</a>
/// </summary>
private void EnsureImportSections()
{
if (_importSections != null)
{
return;
}
_importSections = new List <ReadyToRunImportSection>();
_importCellNames = new Dictionary <int, string>();
_importSignatures = new Dictionary <int, ReadyToRunSignature>();
if (!ReadyToRunHeader.Sections.TryGetValue(ReadyToRunSectionType.ImportSections, out ReadyToRunSection importSectionsSection))
{
return;
}
int offset = GetOffset(importSectionsSection.RelativeVirtualAddress);
int endOffset = offset + importSectionsSection.Size;
while (offset < endOffset)
{
int rva = NativeReader.ReadInt32(Image, ref offset);
int sectionOffset = GetOffset(rva);
int startOffset = sectionOffset;
int size = NativeReader.ReadInt32(Image, ref offset);
CorCompileImportFlags flags = (CorCompileImportFlags)NativeReader.ReadUInt16(Image, ref offset);
byte type = NativeReader.ReadByte(Image, ref offset);
byte entrySize = NativeReader.ReadByte(Image, ref offset);
if (entrySize == 0)
{
switch (Machine)
{
case Machine.I386:
case Machine.ArmThumb2:
entrySize = 4;
break;
case Machine.Amd64:
case Machine.Arm64:
entrySize = 8;
break;
default:
throw new NotImplementedException(Machine.ToString());
}
}
int entryCount = 0;
if (entrySize != 0)
{
entryCount = size / entrySize;
}
int signatureRVA = NativeReader.ReadInt32(Image, ref offset);
int signatureOffset = 0;
if (signatureRVA != 0)
{
signatureOffset = GetOffset(signatureRVA);
}
List <ReadyToRunImportSection.ImportSectionEntry> entries = new List <ReadyToRunImportSection.ImportSectionEntry>();
for (int i = 0; i < entryCount; i++)
{
int entryOffset = sectionOffset - startOffset;
long section = NativeReader.ReadInt64(Image, ref sectionOffset);
uint sigRva = NativeReader.ReadUInt32(Image, ref signatureOffset);
int sigOffset = GetOffset((int)sigRva);
ReadyToRunSignature signature;
string cellName = MetadataNameFormatter.FormatSignature(_assemblyResolver, this, sigOffset, out signature);
entries.Add(new ReadyToRunImportSection.ImportSectionEntry(entries.Count, entryOffset, entryOffset + rva, section, sigRva, cellName));
_importCellNames.Add(rva + entrySize * i, cellName);
_importSignatures.Add(rva + entrySize * i, signature);
}
int auxDataRVA = NativeReader.ReadInt32(Image, ref offset);
int auxDataOffset = 0;
if (auxDataRVA != 0)
{
auxDataOffset = GetOffset(auxDataRVA);
}
_importSections.Add(new ReadyToRunImportSection(_importSections.Count, this, rva, size, flags, type, entrySize, signatureRVA, entries, auxDataRVA, auxDataOffset, Machine, ReadyToRunHeader.MajorVersion));
}
}
/// <summary>
/// based on <a href="https://github.com/dotnet/coreclr/blob/master/src/zap/zapimport.cpp">ZapImportSectionsTable::Save</a>
/// </summary>
private void ParseImportSections()
{
if (!R2RHeader.Sections.ContainsKey(R2RSection.SectionType.READYTORUN_SECTION_IMPORT_SECTIONS))
{
return;
}
R2RSection importSectionsSection = R2RHeader.Sections[R2RSection.SectionType.READYTORUN_SECTION_IMPORT_SECTIONS];
int offset = GetOffset(importSectionsSection.RelativeVirtualAddress);
int endOffset = offset + importSectionsSection.Size;
while (offset < endOffset)
{
int rva = NativeReader.ReadInt32(Image, ref offset);
int sectionOffset = GetOffset(rva);
int startOffset = sectionOffset;
int size = NativeReader.ReadInt32(Image, ref offset);
CorCompileImportFlags flags = (CorCompileImportFlags)NativeReader.ReadUInt16(Image, ref offset);
byte type = NativeReader.ReadByte(Image, ref offset);
byte entrySize = NativeReader.ReadByte(Image, ref offset);
if (entrySize == 0)
{
switch (Machine)
{
case Machine.I386:
case Machine.ArmThumb2:
entrySize = 4;
break;
case Machine.Amd64:
case Machine.Arm64:
entrySize = 8;
break;
default:
throw new NotImplementedException(Machine.ToString());
}
}
int entryCount = 0;
if (entrySize != 0)
{
entryCount = size / entrySize;
}
int signatureRVA = NativeReader.ReadInt32(Image, ref offset);
int signatureOffset = 0;
if (signatureRVA != 0)
{
signatureOffset = GetOffset(signatureRVA);
}
List <R2RImportSection.ImportSectionEntry> entries = new List <R2RImportSection.ImportSectionEntry>();
for (int i = 0; i < entryCount; i++)
{
int entryOffset = sectionOffset - startOffset;
long section = NativeReader.ReadInt64(Image, ref sectionOffset);
uint sigRva = NativeReader.ReadUInt32(Image, ref signatureOffset);
int sigOffset = GetOffset((int)sigRva);
string cellName = MetadataNameFormatter.FormatSignature(_assemblyResolver, this, sigOffset);
entries.Add(new R2RImportSection.ImportSectionEntry(entries.Count, entryOffset, entryOffset + rva, section, sigRva, cellName));
ImportCellNames.Add(rva + entrySize * i, cellName);
}
int auxDataRVA = NativeReader.ReadInt32(Image, ref offset);
int auxDataOffset = 0;
if (auxDataRVA != 0)
{
auxDataOffset = GetOffset(auxDataRVA);
}
ImportSections.Add(new R2RImportSection(ImportSections.Count, this, rva, size, flags, type, entrySize, signatureRVA, entries, auxDataRVA, auxDataOffset, Machine, R2RHeader.MajorVersion));
}
}
