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add basic support for processing LC_DYLD_CHAINED_FIXUPS

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This commit is contained in:
LukeFZ
2025-02-14 19:53:18 +01:00
parent d87a6ef3e3
commit fe56b2fe2f
2 changed files with 129 additions and 3 deletions
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45
Il2CppInspector.Common/FileFormatStreams/FormatLayouts/MachO.cs
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@@ -6,6 +6,7 @@
using System;
using NoisyCowStudios.Bin2Object;
using VersionedSerialization.Attributes;
namespace Il2CppInspector
{
@@ -31,6 +32,7 @@ namespace Il2CppInspector
LC_DYLD_INFO_ONLY = 0x80000022,
LC_FUNCTION_STARTS = 0x26,
LC_ENCRYPTION_INFO_64 = 0x2C,
LC_DYLD_CHAINED_FIXUPS = 0x80000034,
CPU_TYPE_X86 = 7,
CPU_TYPE_X86_64 = 0x01000000 + CPU_TYPE_X86,
@@ -172,4 +174,47 @@ namespace Il2CppInspector
public bool r_extern => ((r_data >> 27) & 1) == 1;
public uint r_type => r_data >> 28;
}
[VersionedStruct]
public partial struct MachODyldChainedFixupsHeader
{
public uint FixupsVersion;
public uint StartsOffset;
public uint ImportsOffset;
public uint SymbolsOffset;
public uint ImportsCount;
public uint ImportsFormat;
public uint SymbolsFormat;
}
[VersionedStruct]
public partial struct MachODyldChainedStartsInSegment
{
public const ushort DYLD_CHAINED_PTR_START_NONE = 0xffff;
public uint StructSize;
public ushort PageSize;
public ushort PointerFormat;
public ulong SegmentOffset;
public uint MaxValidPointer;
public ushort PageCount;
}
public enum MachODyldChainedPtr
{
DYLD_CHAINED_PTR_64 = 2,
DYLD_CHAINED_PTR_64_OFFSET = 6,
}
[VersionedStruct]
public partial struct MachODyldChainedPtr64Rebase
{
private ulong _value;
public ulong Target => _value & 0xfffffffff;
public ulong High8 => (_value >> 36) & 0xff;
public ulong Reserved => (_value >> (36 + 8)) & 0x7f;
public ulong Next => (_value >> (36 + 8 + 7)) & 0xfff;
public bool Bind => ((_value >> (36 + 8 + 7 + 12)) & 0x1) == 0x1;
}
}