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Add FieldRva MetadataUsage type and fix current heuristic

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This commit is contained in:
LukeFZ
2023-11-30 05:15:01 +01:00
parent ab841ccb2b
commit a4528e5f55
4 changed files with 96 additions and 137 deletions
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111
Il2CppInspector.Common/IL2CPP/MetadataUsage.cs
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@@ -1,56 +1,57 @@
/*
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.
*/
namespace Il2CppInspector
{
public enum MetadataUsageType
{
TypeInfo = 1,
Type = 2,
MethodDef = 3,
FieldInfo = 4,
StringLiteral = 5,
MethodRef = 6,
}
public class 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 < 19) {
/* These encoded indices appear only in vtables, and are decoded by IsGenericMethodIndex/GetDecodedMethodIndex */
var isGeneric = encodedIndex & 0x80000000;
index = package.Binary.VTableMethodReferences[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 >= 27)
index >>= 1;
}
return new MetadataUsage(usageType, (int)index, virtualAddress);
}
public void SetAddress(ulong virtualAddress) => VirtualAddress = virtualAddress;
}
/*
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.
*/
namespace Il2CppInspector
{
public enum MetadataUsageType
{
TypeInfo = 1,
Type = 2,
MethodDef = 3,
FieldInfo = 4,
StringLiteral = 5,
MethodRef = 6,
FieldRva = 7
}
public class 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 < 19) {
/* These encoded indices appear only in vtables, and are decoded by IsGenericMethodIndex/GetDecodedMethodIndex */
var isGeneric = encodedIndex & 0x80000000;
index = package.Binary.VTableMethodReferences[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 >= 27)
index >>= 1;
}
return new MetadataUsage(usageType, (int)index, virtualAddress);
}
public void SetAddress(ulong virtualAddress) => VirtualAddress = virtualAddress;
}
}