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IL2CPP: Load all Il2CppCodeGenModule method pointers into memory at init time

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This commit is contained in:
Katy Coe
2019-11-13 17:12:31 +01:00
parent 885679e4bd
commit f5e98678bb
2 changed files with 8 additions and 4 deletions
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6
Il2CppInspector/Il2CppBinary.cs
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@@ -23,6 +23,9 @@ namespace Il2CppInspector
// Only for <=v24.1 // Only for <=v24.1
public ulong[] GlobalMethodPointers { get; set; } public ulong[] GlobalMethodPointers { get; set; }
// Only for >=v24.2
public Dictionary<Il2CppCodeGenModule, ulong[]> ModuleMethodPointers { get; set; } = new Dictionary<Il2CppCodeGenModule, ulong[]>();
// NOTE: In versions <21 and earlier releases of v21, use FieldOffsets: // NOTE: In versions <21 and earlier releases of v21, use FieldOffsets:
// global field index => field offset // global field index => field offset
// In versions >=22 and later releases of v21, use FieldOffsetPointers: // In versions >=22 and later releases of v21, use FieldOffsetPointers:
@@ -153,6 +156,9 @@ namespace Il2CppInspector
foreach (var module in modules) { foreach (var module in modules) {
var name = image.ReadMappedNullTerminatedString(module.moduleName); var name = image.ReadMappedNullTerminatedString(module.moduleName);
Modules.Add(name, module); Modules.Add(name, module);
// Read method pointers
ModuleMethodPointers.Add(module, image.ReadMappedArray<ulong>(module.methodPointers, (int) module.methodPointerCount));
} }
} }

6
Il2CppInspector/Il2CppInspector.cs
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@@ -170,12 +170,10 @@ namespace Il2CppInspector
// In the event of an exception, the method pointer is not set in the file // In the event of an exception, the method pointer is not set in the file
// This probably means it has been optimized away by the compiler, or is an unused generic method // This probably means it has been optimized away by the compiler, or is an unused generic method
try { try {
BinaryImage.Position = BinaryImage.MapVATR(module.methodPointers + (ulong)((method - 1) * (BinaryImage.Bits / 8)));
// Remove ARM Thumb marker LSB if necessary // Remove ARM Thumb marker LSB if necessary
return (ulong) BinaryImage.ReadWord() & 0xffff_ffff_ffff_fffe; return Binary.ModuleMethodPointers[module][method - 1] & 0xffff_ffff_ffff_fffe;
} }
catch (Exception) { } catch (IndexOutOfRangeException) { }
return 0; return 0;
} }