59 lines
2.3 KiB
C#
59 lines
2.3 KiB
C#
/*
|
|
Copyright (c) 2019-2020 Carter Bush - https://github.com/carterbush
|
|
Copyright (c) 2020-2021 Katy Coe - http://www.djkaty.com - https://github.com/djkaty
|
|
Copyright 2020 Robert Xiao - https://robertxiao.ca
|
|
|
|
All rights reserved.
|
|
*/
|
|
|
|
using Il2CppInspector.Next;
|
|
|
|
namespace Il2CppInspector
|
|
{
|
|
public enum MetadataUsageType
|
|
{
|
|
TypeInfo = 1,
|
|
Type = 2,
|
|
MethodDef = 3,
|
|
FieldInfo = 4,
|
|
StringLiteral = 5,
|
|
MethodRef = 6,
|
|
FieldRva = 7
|
|
}
|
|
|
|
public record struct MetadataUsage
|
|
{
|
|
public MetadataUsageType Type { get; }
|
|
public int SourceIndex { get; }
|
|
public ulong VirtualAddress { get; private set; }
|
|
|
|
public MetadataUsage(MetadataUsageType type, int sourceIndex, ulong virtualAddress = 0) {
|
|
Type = type;
|
|
SourceIndex = sourceIndex;
|
|
VirtualAddress = virtualAddress;
|
|
}
|
|
|
|
public static MetadataUsage FromEncodedIndex(Il2CppInspector package, uint encodedIndex, ulong virtualAddress = 0) {
|
|
uint index;
|
|
MetadataUsageType usageType;
|
|
if (package.Version < MetadataVersions.V190) {
|
|
/* These encoded indices appear only in vtables, and are decoded by IsGenericMethodIndex/GetDecodedMethodIndex */
|
|
var isGeneric = encodedIndex & 0x80000000;
|
|
index = package.Binary.VTableMethodReferences[(int)(encodedIndex & 0x7FFFFFFF)];
|
|
usageType = (isGeneric != 0) ? MetadataUsageType.MethodRef : MetadataUsageType.MethodDef;
|
|
} else {
|
|
/* These encoded indices appear in metadata usages, and are decoded by GetEncodedIndexType/GetDecodedMethodIndex */
|
|
var encodedType = encodedIndex & 0xE0000000;
|
|
usageType = (MetadataUsageType)(encodedType >> 29);
|
|
index = encodedIndex & 0x1FFFFFFF;
|
|
|
|
// From v27 the bottom bit is set to indicate the usage token hasn't been replaced with a pointer at runtime yet
|
|
if (package.Version >= MetadataVersions.V270)
|
|
index >>= 1;
|
|
}
|
|
return new MetadataUsage(usageType, (int)index, virtualAddress);
|
|
}
|
|
|
|
public void SetAddress(ulong virtualAddress) => VirtualAddress = virtualAddress;
|
|
}
|
|
} |