public void AcceptSection(WasmSection section)
{
var reader = new WasmReader(section.Payload);
switch (section.Code)
{
case WasmSectionCode.Type:
TypeSections.Add(reader.ReadTypeSection());
break;
case WasmSectionCode.Import:
ImportSections.Add(reader.ReadImportSection());
break;
case WasmSectionCode.Function:
FunctionSections.Add(reader.ReadFunctionSection());
break;
case WasmSectionCode.Table:
TableSections.Add(reader.ReadTableSection());
break;
case WasmSectionCode.Memory:
MemorySections.Add(reader.ReadMemorySection());
break;
case WasmSectionCode.Global:
GlobalSections.Add(reader.ReadGlobalSection());
break;
case WasmSectionCode.Export:
ExportSections.Add(reader.ReadExportSection());
break;
case WasmSectionCode.Start:
StartSections.Add(reader.ReadStartSection());
break;
case WasmSectionCode.Element:
ElementSections.Add(reader.ReadElementSection());
break;
case WasmSectionCode.Code:
CodeSections.Add(reader.ReadCodeSection());
break;
case WasmSectionCode.Data:
DataSections.Add(reader.ReadDataSection());
break;
default:
CustomSections.Add(section);
break;
}
}
/// <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));
}
}
