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Disambiguate field offset array; fix pre-v21.x field offset word size in 64-bit binaries

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Katy Coe
2019-10-27 23:04:07 +01:00
parent c17f47cb71
commit 4e0f11bde4
2 changed files with 31 additions and 20 deletions
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18
Il2CppInspector/Il2CppInspector.cs
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@@ -111,28 +111,16 @@ namespace Il2CppInspector
}
// Get all field offsets
// Versions from 22 onwards use an array of pointers in Binary.FieldOffsetData
bool fieldOffsetsArePointers = (Version >= 22);
// Some variants of 21 also use an array of pointers
if (Version == 21) {
var f = Binary.FieldOffsetData;
// 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 = (f[0] == 0 && f[1] == 0 && f[2] == 0 && f[3] == 0 && f[4] == 0 && f[5] > 0);
if (Binary.FieldOffsets != null) {
FieldOffsets = Binary.FieldOffsets.Select(x => (long) x).ToList();
}
// All older versions use values directly in the array
if (!fieldOffsetsArePointers) {
FieldOffsets = Binary.FieldOffsetData.ToList();
}
// Convert pointer list into fields
else {
var offsets = new Dictionary<int, long>();
for (var i = 0; i < TypeDefinitions.Length; i++) {
var def = TypeDefinitions[i];
var pFieldOffsets = Binary.FieldOffsetData[i];
var pFieldOffsets = Binary.FieldOffsetPointers[i];
if (pFieldOffsets != 0) {
BinaryImage.Position = BinaryImage.MapVATR((ulong) pFieldOffsets);