chizui/Il2CppInspectorRedux
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Add processing of v24+ modules and double-indirected method pointers

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This commit is contained in:
Katy Coe
2019-10-16 16:37:12 +02:00
parent a638e86c38
commit 70def274a7
3 changed files with 52 additions and 8 deletions
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36
Il2CppInspector/Il2CppBinary.cs
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@@ -26,7 +26,12 @@ namespace Il2CppInspector
// type index => RVA in image where the list of field offsets for the type start (4 bytes per field)
public int[] FieldOffsetData { get; private set; }
public List<Il2CppType> Types { get; } = new List<Il2CppType>();
// Every defined type
public List<Il2CppType> Types { get; private set; }
// From later versions of v24 onwards, this structure is stored for each module (image)
// One assembly may contain multiple modules
public Dictionary<string, Il2CppCodeGenModule> Modules { get; private set; }
protected Il2CppBinary(IFileFormatReader stream) {
Image = stream;
@@ -53,7 +58,7 @@ namespace Il2CppInspector
if (loc != 0) {
var (code, metadata) = ConsiderCode(loc, Image.GlobalOffset);
if (code != 0) {
Configure(subImage, code, metadata);
Configure(subImage, code, metadata);
subImage.FinalizeInit(this);
return true;
}
@@ -62,13 +67,32 @@ namespace Il2CppInspector
}
private void Configure(IFileFormatReader image, uint codeRegistration, uint metadataRegistration) {
// Root structures from which we find everything else
CodeRegistration = image.ReadMappedObject<Il2CppCodeRegistration>(codeRegistration);
MetadataRegistration = image.ReadMappedObject<Il2CppMetadataRegistration>(metadataRegistration);
MethodPointers = image.ReadMappedArray<uint>(CodeRegistration.pmethodPointers, (int) CodeRegistration.methodPointersCount);
// The global method pointer list was deprecated in later versions of v24 in favour of Il2CppCodeGenModule
if (Image.Stream.Version <= 24.0)
MethodPointers = image.ReadMappedArray<uint>(CodeRegistration.pmethodPointers, (int) CodeRegistration.methodPointersCount);
// After v24 method pointers and RGCTX data were stored in Il2CppCodeGenModules
if (Image.Stream.Version >= 24.1) {
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);
}
}
// Field offset data. Metadata <=21.x uses a value-type array; >=21.x uses a pointer array
FieldOffsetData = image.ReadMappedArray<int>(MetadataRegistration.pfieldOffsets, MetadataRegistration.fieldOffsetsCount);
var types = image.ReadMappedArray<uint>(MetadataRegistration.ptypes, MetadataRegistration.typesCount);
for (int i = 0; i < MetadataRegistration.typesCount; i++)
Types.Add(image.ReadMappedObject<Il2CppType>(types[i]));
// Type definitions (pointer array)
Types = image.ReadMappedObjectPointerArray<Il2CppType>(MetadataRegistration.ptypes, MetadataRegistration.typesCount);
}
}
}