Struct reading and disassembly script overhaul, various misc. loading fixes, bump to .NET 9 (#13)

* Bump projects to .net 9 and update nugets * add VersionedSerialization + source generator * migrate versioning to StructVersion class, add handling/detection for 29.2/31.2 * add new struct definitions * rename serialization methods and add BinaryObjectStreamReader for interop * Rework metadata struct loading to use new struct versioning * move 29/31.1/.2 to use tags (-2022,-2023) instead of minor versions * fix metadata usage validity checks * rework code registration offsetting a bit and add second 29/31.1 condition * tweak .1 condition (again) * 29/31.2 was a psyop * also remove 29.2 from the readme * remove loading of packed dlls - this was a very unsafe feature * support auto-recovering type indices from type handles fixes loading of memory-dumped v29+ libraries since those replacee their class indices on load with a pointer to the corresponding type * support loading PEs without an export table * also read UnresolvedVirtualCallCount on regular v31 * Disable plugin loading for now * Overhaul disassembler script + add Binary Ninja target (#12) * Overhaul diassembler scripts: - No longer defines top level functions - Split into three classes: StatusHandler (like before), DisassemblerInterface (for interfacing with the used program API), ScriptContext (for definiting general functions that use the disassembler interface) - Add type annotations to all class methods and remove 2.7 compatibility stuff (Ghidra now supports Python 3 so this is unnecessary anymore) - Disassembler backends are now responsible for launching metadata/script processing, to better support disassembler differences - String handling is back in the base ScriptContext class, disassembler interfaces opt into the fake string segment creation and fall back to the old method if it isn't supported * Add Binary Ninja disassembler script backend This uses the new backend-controlled execution to launch metadata processing on a background thread to keep the ui responsive * make binary ninja script use own _BINARYNINJA_ define and add define helpers to header * Update README to account for new script and binary ninja backend * implement fake string segment functions for binary ninja but don't advertise support * also cache API function types in binary ninja backend * fix ida script and disable folders again * Fix metadata usage issues caused by it being a value type now * make TryMapVATR overrideable and implement it for ELFs * Make field offset reading use TryMapVATR to reduce exceptions * Fix NRE in Assembly ctor on < v24.2 * Update actions workflow to produce cross-platform CLI binaries, update readme to reflect .net 9 changes * workflow: only restore packages for projects that are being built * workflow: tweak caching and fix gui compilation * workflow: remove double .zip in CLI artifact name * 29/31.2 don't actually exist, this logic is not needed
2024-11-14 14:32:11 +01:00
parent 5b0476fcc5
commit b05c03964a
130 changed files with 5117 additions and 4371 deletions
--- a/Il2CppInspector.Common/Next/Metadata/Il2CppMetadataUsage.cs
+++ b/Il2CppInspector.Common/Next/Metadata/Il2CppMetadataUsage.cs
@@ -0,0 +1,64 @@
+using System.Diagnostics;
+using VersionedSerialization;
+
+namespace Il2CppInspector.Next.Metadata;
+
+using VersionedSerialization.Attributes;
+using EncodedMethodIndex = uint;
+
+[VersionedStruct]
+public partial record struct Il2CppMetadataUsage
+{
+    private const uint TypeMask = 0b111u << 29;
+    private const uint InflatedMask = 0b1;
+    private const uint IndexMask = ~(TypeMask | InflatedMask);
+
+    public readonly Il2CppMetadataUsageType Type => (Il2CppMetadataUsageType)((EncodedValue & TypeMask) >> 29);
+    public readonly uint Index => (EncodedValue & IndexMask) >> 1;
+    public readonly bool Inflated => (EncodedValue & InflatedMask) == 1;
+
+    public EncodedMethodIndex EncodedValue;
+
+    public static Il2CppMetadataUsage FromValue(in StructVersion version, uint encodedValue)
+    {
+        if (version >= MetadataVersions.V270)
+        {
+            return new Il2CppMetadataUsage
+            {
+                EncodedValue = encodedValue
+            };
+        }
+
+        if (version >= MetadataVersions.V190)
+        {
+            // Below v27 we need to fake the 'inflated' flag, so shift the value by one
+
+            var type = (encodedValue & TypeMask) >> 29;
+            var value = encodedValue & (IndexMask | 1);
+            Debug.Assert((value & 0x10000000) == 0);
+
+            return new Il2CppMetadataUsage
+            {
+                EncodedValue = (type << 29) | (value << 1)
+            };
+        }
+
+        /* These encoded indices appear only in vtables, and are decoded by IsGenericMethodIndex/GetDecodedMethodIndex */
+        var methodType = (encodedValue >> 31) != 0
+            ? Il2CppMetadataUsageType.MethodRef 
+            : Il2CppMetadataUsageType.MethodDef;
+
+        var index = encodedValue & 0x7FFFFFFF;
+        Debug.Assert((index & 0x60000000) == 0);
+
+        return new Il2CppMetadataUsage
+        {
+            EncodedValue = ((uint)methodType << 29) | (index << 1)
+        };
+    }
+
+    public readonly override string ToString()
+    {
+        return $"{Type} @ 0x{Index:X}";
+    }
+}