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Add support for versions v35-v39 #903

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bbfb922
Add support for v35
roytu Feb 19, 2026
76b22e7
Add support for v38
roytu Feb 19, 2026
540425f
Add support for v39
roytu Feb 26, 2026
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158 changes: 158 additions & 0 deletions Il2CppDumper/IO/BinaryStream.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -112,6 +112,144 @@ private object ReadPrimitive(Type type)
return ReadClass<T>();
}

public TypeIndex ReadTypeIndex()
{
if (Version < 35)
{
// Before Version 35, these were always Int32
int value = ReadInt32();
return new TypeIndex(value);
}
else
{
switch (Metadata.typeIndexSize)
{
case 1:
{
uint value = ReadByte();
if (value == Byte.MaxValue) return new TypeIndex(-1);
return new TypeIndex((int)value);
}
case 2:
{
uint value = ReadUInt16();
if (value == UInt16.MaxValue) return new TypeIndex(-1);
return new TypeIndex((int)value);
}
case 4:
default:
{
uint value = ReadUInt32();
if (value == UInt32.MaxValue) return new TypeIndex(-1);
return new TypeIndex((int)value);
}
}
}
}

public TypeDefinitionIndex ReadTypeDefinitionIndex()
{
if (Version < 35)
{
// Before Version 35, these were always Int32
int value = ReadInt32();
return new TypeDefinitionIndex(value);
}
else
{
switch (Metadata.typeDefinitionIndexSize)
{
case 1:
{
uint value = ReadByte();
if (value == Byte.MaxValue) return new TypeDefinitionIndex(-1);
return new TypeDefinitionIndex((int)value);
}
case 2:
{
uint value = ReadUInt16();
if (value == UInt16.MaxValue) return new TypeDefinitionIndex(-1);
return new TypeDefinitionIndex((int)value);
}
case 4:
default:
{
uint value = ReadUInt32();
if (value == UInt32.MaxValue) return new TypeDefinitionIndex(-1);
return new TypeDefinitionIndex((int)value);
}
}
}
}
public GenericContainerIndex ReadGenericContainerIndex()
{
if (Version < 35)
{
// Before Version 35, these were always Int32
int value = ReadInt32();
return new GenericContainerIndex(value);
}
else
{
switch (Metadata.genericContainerIndexSize)
{
case 1:
{
uint value = ReadByte();
if (value == Byte.MaxValue) return new GenericContainerIndex(-1);
return new GenericContainerIndex((int)value);
}
case 2:
{
uint value = ReadUInt16();
if (value == UInt16.MaxValue) return new GenericContainerIndex(-1);
return new GenericContainerIndex((int)value);
}
case 4:
default:
{
uint value = ReadUInt32();
if (value == UInt32.MaxValue) return new GenericContainerIndex(-1);
return new GenericContainerIndex((int)value);
}
}
}
}
public ParameterIndex ReadParameterIndex()
{
if (Version < 39)
{
// Before Version 39, these were always Int32
int value = ReadInt32();
return new ParameterIndex(value);
}
else
{
switch (Metadata.parameterIndexSize)
{
case 1:
{
uint value = ReadByte();
if (value == Byte.MaxValue) return new ParameterIndex(-1);
return new ParameterIndex((int)value);
}
case 2:
{
uint value = ReadUInt16();
if (value == UInt16.MaxValue) return new ParameterIndex(-1);
return new ParameterIndex((int)value);
}
case 4:
default:
{
uint value = ReadUInt32();
if (value == UInt32.MaxValue) return new ParameterIndex(-1);
return new ParameterIndex((int)value);
}
}
}
}

public T ReadClass<T>() where T : new()
{
var type = typeof(T);
Expand Down Expand Up @@ -168,6 +306,26 @@ private object ReadPrimitive(Type type)
}
i.SetValue(t, methodInfo.Invoke(this, new object[] { arrayLengthAttribute.Length }));
}
else if (fieldType == typeof(TypeIndex))
{
i.SetValue(t, ReadTypeIndex());
}
else if (fieldType == typeof(TypeDefinitionIndex))
{
i.SetValue(t, ReadTypeDefinitionIndex());
}
else if (fieldType == typeof(GenericContainerIndex))
{
i.SetValue(t, ReadGenericContainerIndex());
}
else if (fieldType == typeof(ParameterIndex))
{
i.SetValue(t, ReadParameterIndex());
}
else if (fieldType == typeof(Il2CppSectionMetadata))
{
i.SetValue(t, ReadClass<Il2CppSectionMetadata>());
}
else
{
if (!genericMethodCache.TryGetValue(fieldType, out var methodInfo))
Expand Down
2 changes: 1 addition & 1 deletion Il2CppDumper/Il2Cpp/Il2Cpp.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -7,7 +7,7 @@ namespace Il2CppDumper
{
public abstract class Il2Cpp : BinaryStream
{
private Il2CppMetadataRegistration pMetadataRegistration;
public Il2CppMetadataRegistration pMetadataRegistration;
private Il2CppCodeRegistration pCodeRegistration;
public ulong[] methodPointers;
public ulong[] genericMethodPointers;
Expand Down
37 changes: 37 additions & 0 deletions Il2CppDumper/Il2Cpp/Il2CppClass.cs
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Original file line number Diff line number Diff line change
@@ -1,4 +1,6 @@
using System;
using System.Linq;
using System.Reflection;

namespace Il2CppDumper
{
Expand Down Expand Up @@ -63,6 +65,41 @@ public class Il2CppCodeRegistration
public ulong codeGenModulesCount;
[Version(Min = 24.2)]
public ulong codeGenModules;

public static ulong Size(double version)
{
ulong size = 0;
foreach (var field in typeof(Il2CppCodeRegistration).GetFields()) {
// Check if the field exists in our version
var versionAttributes = field.GetCustomAttributes<VersionAttribute>().ToArray();
if (versionAttributes?.Length > 0)
{
var isInVersionRange = false;
foreach (var versionAttribute in versionAttributes)
{
if (versionAttribute.Min <= version && version <= versionAttribute.Max)
{
isInVersionRange = true;
break;
}
}
if (!isInVersionRange)
{
continue;
}
}

if (field.FieldType == typeof(byte) || field.FieldType == typeof(sbyte))
size += sizeof(byte);
if (field.FieldType == typeof(long) || field.FieldType == typeof(ulong))
size += sizeof(ulong);
if (field.FieldType == typeof(int) || field.FieldType == typeof(uint))
size += sizeof(uint);
if (field.FieldType == typeof(short) || field.FieldType == typeof(ushort))
size += sizeof(ushort);
}
return size;
}
}

public class Il2CppMetadataRegistration
Expand Down
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