private void Configure(IFileFormatReader image, ulong codeRegistration, ulong metadataRegistration)
{
// Output locations
Console.WriteLine("CodeRegistration struct found at 0x{0:X16} (file offset 0x{1:X8})", image.Bits == 32 ? codeRegistration & 0xffff_ffff : codeRegistration, image.MapVATR(codeRegistration));
Console.WriteLine("MetadataRegistration struct found at 0x{0:X16} (file offset 0x{1:X8})", image.Bits == 32 ? metadataRegistration & 0xffff_ffff : metadataRegistration, image.MapVATR(metadataRegistration));
// Set width of long (convert to sizeof(int) for 32-bit files)
if (image.Bits == 32)
{
image.Stream.PrimitiveMappings.Add(typeof(long), typeof(int));
image.Stream.PrimitiveMappings.Add(typeof(ulong), typeof(uint));
}
// Root structures from which we find everything else
CodeRegistration = image.ReadMappedObject <Il2CppCodeRegistration>(codeRegistration);
MetadataRegistration = image.ReadMappedObject <Il2CppMetadataRegistration>(metadataRegistration);
// The global method pointer list was deprecated in v24.2 in favour of Il2CppCodeGenModule
if (Image.Version <= 24.1)
{
GlobalMethodPointers = image.ReadMappedArray <ulong>(CodeRegistration.pmethodPointers, (int)CodeRegistration.methodPointersCount);
}
// After v24 method pointers and RGCTX data were stored in Il2CppCodeGenModules
if (Image.Version >= 24.2)
{
Modules = new Dictionary <string, Il2CppCodeGenModule>();
// Array of pointers to Il2CppCodeGenModule
var modules = image.ReadMappedObjectPointerArray <Il2CppCodeGenModule>(CodeRegistration.pcodeGenModules, (int)CodeRegistration.codeGenModulesCount);
foreach (var module in modules)
{
var name = image.ReadMappedNullTerminatedString(module.moduleName);
Modules.Add(name, module);
// Read method pointers
ModuleMethodPointers.Add(module, image.ReadMappedArray <ulong>(module.methodPointers, (int)module.methodPointerCount));
}
}
// Field offset data. Metadata <=21.x uses a value-type array; >=21.x uses a pointer array
// Versions from 22 onwards use an array of pointers in Binary.FieldOffsetData
bool fieldOffsetsArePointers = (image.Version >= 22);
// Some variants of 21 also use an array of pointers
if (image.Version == 21)
{
// Always 4-byte values even for 64-bit builds when array is NOT pointers
var fieldTest = image.ReadMappedArray <uint>(MetadataRegistration.pfieldOffsets, 6);
// We detect this by relying on the fact Module, Object, ValueType, Attribute, _Attribute and Int32
// are always the first six defined types, and that all but Int32 have no fields
fieldOffsetsArePointers = (fieldTest[0] == 0 && fieldTest[1] == 0 && fieldTest[2] == 0 && fieldTest[3] == 0 && fieldTest[4] == 0 && fieldTest[5] > 0);
}
// All older versions use values directly in the array
if (!fieldOffsetsArePointers)
{
FieldOffsets = image.ReadMappedArray <uint>(MetadataRegistration.pfieldOffsets, (int)MetadataRegistration.fieldOffsetsCount);
}
else
{
FieldOffsetPointers = image.ReadMappedWordArray(MetadataRegistration.pfieldOffsets, (int)MetadataRegistration.fieldOffsetsCount);
}
// Type definitions (pointer array)
Types = image.ReadMappedObjectPointerArray <Il2CppType>(MetadataRegistration.ptypes, (int)MetadataRegistration.typesCount);
// Custom attribute constructors
CustomAttributeGenerators = image.ReadMappedArray <ulong>(CodeRegistration.customAttributeGenerators, (int)CodeRegistration.customAttributeCount);
// Generic method specs
MethodSpecs = image.ReadMappedArray <Il2CppMethodSpec>(MetadataRegistration.methodSpecs, (int)MetadataRegistration.methodSpecsCount);
}
private void Configure(IFileFormatReader image, ulong codeRegistration, ulong metadataRegistration)
{
// Store locations
CodeRegistrationPointer = codeRegistration;
MetadataRegistrationPointer = metadataRegistration;
Console.WriteLine("CodeRegistration struct found at 0x{0:X16} (file offset 0x{1:X8})", image.Bits == 32 ? codeRegistration & 0xffff_ffff : codeRegistration, image.MapVATR(codeRegistration));
Console.WriteLine("MetadataRegistration struct found at 0x{0:X16} (file offset 0x{1:X8})", image.Bits == 32 ? metadataRegistration & 0xffff_ffff : metadataRegistration, image.MapVATR(metadataRegistration));
// Set width of long (convert to sizeof(int) for 32-bit files)
if (image.Bits == 32)
{
image.Stream.PrimitiveMappings.Add(typeof(long), typeof(int));
image.Stream.PrimitiveMappings.Add(typeof(ulong), typeof(uint));
}
// Root structures from which we find everything else
CodeRegistration = image.ReadMappedObject <Il2CppCodeRegistration>(codeRegistration);
MetadataRegistration = image.ReadMappedObject <Il2CppMetadataRegistration>(metadataRegistration);
// The global method pointer list was deprecated in v24.2 in favour of Il2CppCodeGenModule
if (Image.Version <= 24.1)
{
GlobalMethodPointers = image.ReadMappedArray <ulong>(CodeRegistration.pmethodPointers, (int)CodeRegistration.methodPointersCount);
}
// After v24 method pointers and RGCTX data were stored in Il2CppCodeGenModules
if (Image.Version >= 24.2)
{
Modules = new Dictionary <string, Il2CppCodeGenModule>();
// Array of pointers to Il2CppCodeGenModule
var codeGenModulePointers = image.ReadMappedArray <ulong>(CodeRegistration.pcodeGenModules, (int)CodeRegistration.codeGenModulesCount);
var modules = image.ReadMappedObjectPointerArray <Il2CppCodeGenModule>(CodeRegistration.pcodeGenModules, (int)CodeRegistration.codeGenModulesCount);
foreach (var mp in modules.Zip(codeGenModulePointers, (m, p) => new { Module = m, Pointer = p }))
{
var module = mp.Module;
var name = image.ReadMappedNullTerminatedString(module.moduleName);
Modules.Add(name, module);
CodeGenModulePointers.Add(name, mp.Pointer);
// Read method pointers
ModuleMethodPointers.Add(module, image.ReadMappedArray <ulong>(module.methodPointers, (int)module.methodPointerCount));
// Read method invoker pointer indices - one per method
MethodInvokerIndices.Add(module, image.ReadMappedArray <int>(module.invokerIndices, (int)module.methodPointerCount));
}
}
// Field offset data. Metadata <=21.x uses a value-type array; >=21.x uses a pointer array
// Versions from 22 onwards use an array of pointers in Binary.FieldOffsetData
bool fieldOffsetsArePointers = (image.Version >= 22);
// Some variants of 21 also use an array of pointers
if (image.Version == 21)
{
// Always 4-byte values even for 64-bit builds when array is NOT pointers
var fieldTest = image.ReadMappedArray <uint>(MetadataRegistration.pfieldOffsets, 6);
// We detect this by relying on the fact Module, Object, ValueType, Attribute, _Attribute and Int32
// are always the first six defined types, and that all but Int32 have no fields
fieldOffsetsArePointers = (fieldTest[0] == 0 && fieldTest[1] == 0 && fieldTest[2] == 0 && fieldTest[3] == 0 && fieldTest[4] == 0 && fieldTest[5] > 0);
}
// All older versions use values directly in the array
if (!fieldOffsetsArePointers)
{
FieldOffsets = image.ReadMappedArray <uint>(MetadataRegistration.pfieldOffsets, (int)MetadataRegistration.fieldOffsetsCount);
}
else
{
FieldOffsetPointers = image.ReadMappedWordArray(MetadataRegistration.pfieldOffsets, (int)MetadataRegistration.fieldOffsetsCount);
}
// Type references (pointer array)
var typeRefPointers = image.ReadMappedArray <ulong>(MetadataRegistration.ptypes, (int)MetadataRegistration.typesCount);
TypeReferenceIndicesByAddress = typeRefPointers.Zip(Enumerable.Range(0, typeRefPointers.Length), (a, i) => new { a, i }).ToDictionary(x => x.a, x => x.i);
TypeReferences = image.ReadMappedObjectPointerArray <Il2CppType>(MetadataRegistration.ptypes, (int)MetadataRegistration.typesCount);
// Custom attribute constructors (function pointers)
CustomAttributeGenerators = image.ReadMappedArray <ulong>(CodeRegistration.customAttributeGenerators, (int)CodeRegistration.customAttributeCount);
// Method.Invoke function pointers
MethodInvokePointers = image.ReadMappedArray <ulong>(CodeRegistration.invokerPointers, (int)CodeRegistration.invokerPointersCount);
// TODO: Function pointers as shown below
// reversePInvokeWrappers
// <=22: delegateWrappersFromManagedToNative, marshalingFunctions;
// >=21 <=22: ccwMarhsalingFunctions
// >=22: unresolvedVirtualCallPointers
// >=23: interopData
// Generic type and method specs (open and closed constructed types)
MethodSpecs = image.ReadMappedArray <Il2CppMethodSpec>(MetadataRegistration.methodSpecs, (int)MetadataRegistration.methodSpecsCount);
// Concrete generic class and method signatures
GenericInstances = image.ReadMappedObjectPointerArray <Il2CppGenericInst>(MetadataRegistration.genericInsts, (int)MetadataRegistration.genericInstsCount);
// Concrete generic method pointers
var genericMethodPointers = image.ReadMappedArray <ulong>(CodeRegistration.genericMethodPointers, (int)CodeRegistration.genericMethodPointersCount);
var genericMethodTable = image.ReadMappedArray <Il2CppGenericMethodFunctionsDefinitions>(MetadataRegistration.genericMethodTable, (int)MetadataRegistration.genericMethodTableCount);
foreach (var tableEntry in genericMethodTable)
{
GenericMethodPointers.Add(MethodSpecs[tableEntry.genericMethodIndex], genericMethodPointers[tableEntry.indices.methodIndex]);
GenericMethodInvokerIndices.Add(MethodSpecs[tableEntry.genericMethodIndex], tableEntry.indices.invokerIndex);
}
}